If you’ve ever asked, “what is the everyday name for sodium sulphate,” you’re not alone. This ubiquitous industrial chemical travels under several monikers depending on its hydration state, purity, and the sector using it. In detergent plants, it’s simply salt cake. In textile dye houses, it might be called anhydrous sodium sulfate. And in glass furnaces or laboratories, you’ll hear Glauber’s salt—though that name technically belongs to the decahydrate form. For procurement managers sourcing bulk raw materials, understanding these aliases is critical to avoid costly specification errors. This guide unpacks the everyday names, the science behind them, and why 99% purity anhydrous sodium sulphate from a reliable supplier like Hailei Chemical’s sodium sulphate is the backbone of numerous industrial processes.
The short answer: it depends. Sodium sulphate (Na2SO4) exists in two main commercial forms. The anhydrous variety—the one overwhelmingly used as a detergent filler, in glassmaking, and textile processing—is called salt cake in everyday industrial language. The hydrated decahydrate (Na2SO4·10H2O) is universally known as Glauber’s salt, named after the German-Dutch alchemist Johann Rudolf Glauber who first synthesized it in the 17th century. In modern B2B trade, however, “sodium sulphate” almost always refers to the anhydrous powder, and “salt cake” is its most persistent colloquial name. You might also encounter older terms like sulfate of soda or simply Na2SO4. Recognizing these names prevents miscommunication when issuing tenders, reviewing certificates of analysis, or comparing supplier quotes.
The multiplicity stems from history and manufacturing pathways. Glauber originally prepared the salt from sulfuric acid and common salt, then observed its cooling sensation and laxative effect—earning it the name sal mirabile (miraculous salt). For centuries it remained a medicinal curiosity before the chemical industry scaled up production in the 19th century via the Mannheim process, which produced synthetic hydrochloric acid and sodium sulphate as a co-product. The resultant anhydrous mass was a dense, hard cake that required crushing; thus, plant operators and traders simply called it salt cake. In regions like North America, natural deposits of the decahydrate in saline lakes gave rise to the mineral mirabilite, often marketed as Glauber’s salt. Today, synthetic salt cake dominates global supply, and the term persists even though modern prilling and drying technologies yield a free-flowing powder rather than a cake.
In procurement documents, technical datasheets, and daily plant-floor conversation, salt cake is the go-to term for anhydrous sodium sulphate. When a detergent manufacturer asks for “99% salt cake,” they mean high-purity Na2SO4 with essentially no water of crystallization. This precise vocabulary matters because the decahydrate (Glauber’s salt) contains over 55% water by weight—a massive difference that would derail formulations. As a buyer, specifying “salt cake” clearly communicates your requirement for the anhydrous sodium sulphate used as a filler in powder detergents, a refining agent in glass, or a levelling auxiliary in textile dyeing. The term also implies a heavy bulk density (typically 1.4–1.6 g/cm³) and free-flowing characteristics that the crystalline decahydrate lacks.
While less common in bulk industrial purchasing, Glauber’s salt (sodium sulphate decahydrate) still owns a legitimate everyday name. Its high water content offers latent heat storage properties, making it a candidate for phase-change materials in thermal energy storage. In analytical chemistry, Glauber’s salt serves as a stable standard. Historically, it was even used as a laxative. Today, however, most large-volume consumers opt for anhydrous salt cake to avoid shipping diluted product. If a supplier offers “sodium sulphate” at a suspiciously low price, careful buyers confirm whether the quote refers to anhydrous or decahydrate basis—a classic pitfall that differentiating the everyday names helps avoid.
A foundational knowledge of the sodium sulphate formula and properties equips industrial buyers to assess quality and suitability. The chemical formula for the anhydrous salt is Na2SO4. Its molecular weight is 142.04 g/mol. The decahydrate formula is Na2SO4·10H2O with a molecular weight of 322.20 g/mol. At Hailei Chemical, our standard product meets the following typical specifications:
The high melting point is critical for glass manufacturing, where sodium sulphate acts as a fining agent to remove bubbles without volatilizing. In detergents, the neutral pH and excellent flowability make salt cake the ideal inert filler. Understanding these properties helps buyers distinguish between generic sodium sulphate and premium grades that minimize impurities like iron or chlorides, which can stain textiles or corrode equipment. Always request a certificate of analysis (CoA) to confirm the formula and properties align with your process requirements.
The phrase “uses of sodium sulphate in daily life” might sound consumer-oriented, but the reality is that salt cake is a workhorse in manufacturing the products we all use every day. Its hidden hand extends across:
Laundry detergent manufacturers blend sodium sulphate at 20–50% by weight as a cost-effective bulking agent. It improves powder flow, prevents caking, and helps standardize scoop sizes without altering cleaning performance. For every box of detergent on a supermarket shelf, salt cake likely constitutes a major fraction. Procurement teams in this sector demand consistent particle size distribution and low chloride to avoid corrosion of automatic dosing machines. Hailei Chemical supplies precisely this: 99% pure sodium sulphate for detergent manufacturing.
In float glass, container glass, and specialty glass, sodium sulphate serves as a flux and fining agent. It helps remove gas bubbles and prevents scum formation on the molten glass surface. The glass industry consumes massive tonnages, with typical addition rates of 0.5–2% of the batch weight. Here, the everyday name “salt cake” is standard in recipe cards and purchase orders.
Sodium sulphate’s ability to promote level dyeing of reactive and direct dyes makes it indispensable in textile mills. It helps control the rate of dye exhaustion, ensuring uniform color on cotton, viscose, and blends. The required purity is high; metallic impurities like iron must be minimal to prevent shade variation. When textile plant managers refer to “the sulphate,” they usually mean anhydrous sodium sulphate from their chemical store.
In the kraft process, sodium sulphate is added to the recovery cycle to replace sodium and sulfur lost during pulping. It is reduced to sodium sulfide in the recovery boiler, replenishing the pulping liquor. The term “salt cake” is historically used in pulp mills, dating back to when the chemical was obtained as a byproduct cake from hydrochloric acid plants.
Sodium sulphate acts as a precursor for making sodium sulfide, sodium silicate, and precipitated silica. These downstream chemicals reappear in detergents, construction materials, and water treatment—proving how one bulk chemical under its everyday name weaves through the entire chemical supply chain.
Beyond its low cost, sodium sulfate benefits span functional, logistical, and environmental dimensions that forward-thinking procurement managers evaluate:
For B2B users, the key benefit remains the combination of reliable purity and competitive landed cost. When sourcing from Hailei Chemical, consistency across shipments means fewer production adjustments and less downtime.
Consumer interest in “best sodium sulphate free shampoo” has sparked a trend that seems to threaten traditional sodium sulphate markets. Sulfate-free personal care formulations avoid sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES), but they are distinct from sodium sulphate itself. However, the “sulfate-free” label has created confusion, and some marketers mistakenly lump sodium sulphate as a harsh chemical to avoid. In reality, sodium sulphate is not a surfactant; it’s a filler and processing aid that does not interact with skin or hair. The industrial detergent sector remains unaffected by this trend—laundry and dishwashing powders continue to demand millions of tonnes of salt cake globally. Nevertheless, the personal care shift may encourage some detergent manufacturers to explore sulfate-free surfactants, slightly altering the formulation landscape but not diminishing the need for an inert, low-cost filler like sodium sulphate. If anything, new categories of cleaning products might still use sodium sulphate for its bulking properties. Savvy buyers monitor these market signals to adjust sourcing strategies but recognize that the everyday name “salt cake” will stay firmly in the industrial vocabulary.
When your plant’s product quality hangs on a specification sheet, you need more than just a name. The top-tier anhydrous sodium sulphate from Hailei Chemical meets the stringent requirements of ISO 9001-managed production. Here’s what to look for when comparing suppliers:
Request a pre-shipment sample and full CoA with every lot. By doing so, you confirm that what you ordered—whether you call it salt cake, anhydrous sodium sulfate, or simply “the sulphate”—exactly matches what arrives at your receiving dock.
International chemical procurement is full of trivial details that become critical. A purchase order that reads “Glauber’s salt” might inadvertently lead a supplier to ship decahydrate crystals, drastically increasing your freight cost for water. Conversely, specifying “salt cake” universally communicates anhydrous sodium sulphate in most Asian and Middle Eastern markets. At Hailei Chemical, we ensure that every inquiry for “what is the everyday name for sodium sulphate” resolves into a clear technical specification. Our export documentation consistently lists the product as “Sodium Sulphate Anhydrous 99% min, also known as salt cake,” removing ambiguities. With our production base in Weifang, close to Qingdao port, we offer competitive ocean freight to major global destinations. Efficient container loading—25–27 metric tons per 20’ container—maximizes your freight economy.
Modern chemical buyers integrate ESG (Environmental, Social, Governance) criteria into supplier selection. Sodium sulphate scores well: it is not classified as hazardous under GHS, it is readily biodegradable to sulfate ion, and its production from natural brine or as a byproduct of other processes often has a modest carbon footprint relative to synthetic organic chemicals. Hailei Chemical is committed to sustainable manufacturing, continuously optimizing energy use and waste recycling. When you source sodium sulphate anhydrous from Hailei, you can request life-cycle data that supports your sustainability reports. The everyday name may be salt cake, but the modern reality is a clean, consistent chemical that helps you meet your product’s ecological goals.
Yes, in industrial contexts, “salt cake” is the common name for anhydrous sodium sulphate (Na2SO4) with no water of crystallization. It typically contains at least 99% Na2SO4 and is used as a filler, fining agent, and chemical intermediate.
Glauber’s salt is sodium sulphate decahydrate (Na2SO4·10H2O), containing over 55% water by weight. Salt cake is the anhydrous form. On a weight basis, you would need over twice as much Glauber’s salt to obtain the same active Na2SO4, making salt cake far more economical for bulk applications.
The name originates from the Mannheim process, where sodium sulphate formed a hard cake after the reaction of salt and sulfuric acid. Even though modern production yields a powder, the term stuck in the detergent industry as a practical shorthand.
It is generally not recommended because the high water content will alter your formulation’s active concentration. Some niche applications, like thermal storage, specifically want the decahydrate. Always confirm the required hydration state before purchasing.
Now that you know “what is the everyday name for sodium sulphate” and why it matters, the next step is securing a consistent, high-purity supply. Hailei Fine Chemical Co., Ltd. produces 99% min anhydrous sodium sulphate—salt cake—tailored for detergent, glass, textile, and pulp industries. Our Weifang facility ensures short lead times and competitive pricing. Whether you require bagged material or bulk shipment, our quality assurance team will support your production with reliable specifications and documentation.
Ready to place an order or request a sample? Get a quote today and experience the difference of working with a dedicated sodium sulphate supplier who understands your needs—from everyday names to critical quality metrics.
For procurement managers and chemical engineers in the textile industry, the difference between a brilliant, colorfast fabric and a disappointing wash-out often comes down to a single, inexpensive white powder: sodium sulphate. Yet, when purchasing teams in India’s textile hubs begin a sourcing cycle, many instinctively type “sodium sulphide manufacturers in Gujarat” into their search bars. While Gujarat is indeed a powerhouse for sodium sulphide production—used heavily in leather tanning and ore flotation—the chemical that truly reigns in the dyehouse is sodium sulphate anhydrous (Na₂SO₄), the workhorse salt that sets reactive dyes into cellulosic fibers. Understanding this distinction, along with sodium sulphate’s physical properties, current price per kilogram, and supply chain dynamics, is critical for any buyer looking to secure a reliable, cost-effective source. This comprehensive guide will walk you through how sodium sulphate functions as the “salt to set dye in fabric,” compare its role with other sodium chemicals, demystify why sodium sulphide manufacturers in Gujarat appear in your searches, and equip you with the procurement insights needed to make an informed supplier choice.
If you have ever walked through a textile mill and heard dyers refer to “adding salt,” they are not speaking of table salt (sodium chloride). In reactive dyeing of cotton, viscose, and other cellulosic fibers, the “salt” is almost always sodium sulphate. But why is it so essential? During the dyeing process, reactive dye molecules are negatively charged in an aqueous bath. Cellulose fibers also develop a negative surface charge when wet, causing electrostatic repulsion that prevents the dye from exhausting onto the fabric. Sodium sulphate acts as a dyeing auxiliary that neutralizes this charge barrier. The high ionic strength provided by the dissociated sodium and sulphate ions compresses the electrical double layer around the fiber, allowing the dye to approach, adsorb, and eventually form covalent bonds with the cellulose under alkaline conditions. This entire mechanism is why the search query “salt to set dye in fabric” rightly leads to sodium sulphate.
Procurement specialists should note that not just any sulphate salt will do. Sodium sulphate’s effectiveness stems from its high solubility (up to 420 g/L at 30°C) and the fact that it releases two sodium ions per molecule, giving a stronger ionic boost than sodium chloride at equivalent weight concentrations. Moreover, unlike sodium chloride, sodium sulphate does not introduce chloride ions that can corrode stainless steel dyeing machines over time. For these reasons, anhydrous sodium sulphate with a purity of 99% minimum—exactly the grade supplied by Weifang Hailei Fine Chemical Co., Ltd.—is the standard in textile mills from Surat to Shanghai. To view detailed product specifications, visit our sodium sulphate product page.
B2B buyers often encounter a confusing overlap in chemical nomenclature. A common question that arises is: “Why is sodium lauryl sulphate used in toothpaste?”—and could that substance serve as a dye auxiliary? The answer is a firm no. Sodium lauryl sulphate (SLS) is an anionic surfactant, a completely different molecule from sodium sulphate (Na₂SO₄). SLS (CH₃(CH₂)₁₁OSO₃Na) is used in toothpaste and personal care products for its foaming and detergency properties. Its long hydrocarbon chain makes it an effective emulsifier, but it is entirely unsuitable for dye fixation because it lacks the simple ionic strength mechanism of an inorganic salt. Worse, SLS can interact with dyestuffs and interfere with level dyeing. When sourcing the right salt to set dye in fabric, always specify sodium sulphate anhydrous, not any lauryl compound. This confusion frequently arises when buyers unfamiliar with chemical naming attempt to cross-reference ingredients, so procurement teams should communicate explicitly with suppliers to confirm the CAS number (7757-82-6) rather than relying on commercial names.
Understanding the physical properties of sodium sulphate is not just an academic exercise—it directly influences handling, storage, and dissolution in an industrial dyehouse. Sodium sulphate anhydrous is a white, crystalline powder with a density of 2.68 g/cm³, a melting point of 884°C, and high hygroscopicity. These characteristics have practical implications:
These physical properties of sodium sulphate are often overlooked by buyers who focus solely on price per kilogram. However, a load that arrives with lumps due to moisture adsorption will cost far more in rejections and production downtime than a few cents saved on a low-purity supply. Always request a certificate of analysis (COA) that includes moisture content (≤0.2% for anhydrous grade) and pH before confirming an order.
Procurement managers tracking the price of sodium sulphate per kg will notice significant disparities between domestic Indian quotations and FOB China offers. As of mid-2025, typical price ranges are:
| Origin & Grade | Price (USD/kg) | Notes |
|---|---|---|
| China, 99% min, anhydrous, FOB | $0.12 – $0.18 | Large bag (1000 kg) quantities; lower end for 100+ MT annual contracts |
| India (Gujarat), small pack, ex-works | ₹12 – ₹20/kg (approx. $0.14 – $0.24) | Often byproduct sulphate; purity may fluctuate |
| European refined grade | $0.35 – $0.50 | Synthetic route, premium purity, REACH compliant |
The price of sodium sulphate per kg is influenced by feedstock (natural mineral thenardite vs. synthetic from HCl neutralization), energy costs for drying to anhydrous form, and logistics. As a leading Chinese exporter, Weifang Hailei Fine Chemical Co., Ltd. leverages massive production scale and direct access to raw material sources in Shandong to offer competitive FOB prices that consistently beat local Gujarat suppliers on a delivered-cost basis to major textile markets like Southeast Asia, Bangladesh, and the Middle East. When comparing costs, always factor in the hidden costs of inconsistent purity—a 97% material may contain 2% chloride impurities that can corrode equipment and ruin dyebaths, making the 99% pure sodium sulphate the more economical choice in the long run.
India’s Gujarat state has long been a chemical manufacturing powerhouse, and indeed many buyers in the subcontinent begin their sourcing journey looking for sodium sulphide manufacturers in Gujarat. Sodium sulphide (Na₂S) is a distinct product used in leather dehairing, mining flotation, and sulfur dyeing. Gujarat’s sodium sulphide producers often obtain sodium sulphate as a byproduct from the Mannheim process or from neutralizing caustic soda with sulfuric acid. Consequently, some of these sodium sulphide manufacturers in Gujarat also sell sodium sulphate as a co-product. This creates an interesting dynamic for textile dyeing buyers: while sulfate supply is locally available, its quality can be variable—often containing residual sulfide traces or heavy metals that are detrimental to dye shades.
From a procurement standpoint, the Gujarat connection is important because many Indian textile mills in Ahmedabad, Surat, and Bhilwara initially search for sodium sulphide manufacturers in Gujarat hoping to find a nearby, integrated supplier for all sodium chemicals. However, when the requirement is specifically high-purity anhydrous sodium sulphate for dyeing, the search should narrow to dedicated sulphate producers. Chinese suppliers like Hailei Chemical have carved a niche by supplying consistent 99% pure material, free from sulfide contamination, to Indian importers who then distribute it to textile hubs. So, while “sodium sulphide manufacturers in Gujarat” remains a relevant search term in the broader sodium chemical landscape, the smart buyer of textile-grade sodium sulphate compares both local byproduct offerings and refined imports to secure the best value without compromising on dyeing quality.
Although the textile application is our central theme, the versatility of sodium sulphate means that many other industrial buyers benefit from understanding its functions. In detergent powder manufacturing, sodium sulphate serves as an inert filler, providing bulk and improving powder flow at up to 30% of the formula—our product’s 99% purity ensures no impurities affect surfactant performance. For glass manufacturing, sodium sulphate acts as a fining agent, helping to remove bubbles from molten glass; the granulated form reduces dust during batching. In kraft paper pulping, sulphate is a makeup chemical in the recovery cycle, and anhydrous sodium sulphate replenishes the sulphur losses. As a chemical feedstock, it is a precursor for sodium silicate and other derivatives. This broad demand base means that reliable exporters like Hailei Chemical maintain large inventories, buffering textile buyers from seasonal shortages.
When shortlisting sodium sulphate suppliers—whether based in China, India, or elsewhere—consider these criteria to avoid costly purchasing mistakes:
By systematically benchmarking potential suppliers against this checklist, you will minimize the risk of receiving off-spec material that could shut down a dyehouse line.
Sustainability has become a key differentiator in chemical procurement. Sodium sulphate itself is non-toxic, non-flammable, and environmentally benign once discharged—it is even approved as a food additive (E514). However, the source of sodium sulphate can impact the carbon footprint. Natural sodium sulphate extracted from lakes (e.g., in China’s Qinghai region) has a lower energy footprint than synthetic processes. Weifang Hailei Fine Chemical Co., Ltd. sources from energy-efficient production lines and continuously works on reducing emissions. For textile brands under pressure to meet ESG targets, sourcing sulfate from a transparent exporter can contribute to scope 3 emission reductions. When engaging with sodium sulphide manufacturers in Gujarat or other regional players, inquire about their byproduct sourcing and whether they recycle waste sulphur—this due diligence aligns with the growing demand for green chemistry in the textile supply chain.
Let us address a few persistent myths that can mislead procurement decisions:
The simple salt that sets dye in fabric—sodium sulphate—is a cornerstone of textile processing that deserves careful sourcing attention. From understanding its physical properties to comparing the price of sodium sulphate per kg and navigating the regional supply dynamics involving sodium sulphide manufacturers in Gujarat, informed buyers gain a competitive edge. Weifang Hailei Fine Chemical Co., Ltd. stands ready to meet your requirements with 99% pure anhydrous sodium sulphate, backed by consistent quality, flexible logistics, and deep technical expertise. Whether you operate a cotton dyehouse in Tirupur, a denim mill in Bangladesh, or a home textile factory in Pakistan, we deliver the reliability you need. Visit our sodium sulphate product page to review full specifications, and when you are ready to start a partnership, request a competitive quote today. Let’s transform your dyeing process with the right salt—every batch, every color.
If you’ve ever wondered why sodium lauryl sulphate used in toothpaste, you’re not alone. This surfactant is the primary reason your toothpaste foams, lifting debris and ensuring a thorough clean. But here’s the catch – sodium lauryl sulphate (SLS) is often confused with sodium sulphate (Na₂SO₄), a completely different industrial workhorse. While SLS creates bubbles in personal care, anhydrous sodium sulphate is the invisible backbone of detergent powders, flat glass, and kraft paper. In this deep dive, we’ll clarify that foaming question, then pivot to what genuinely matters for your procurement: the physical properties, applications, and strategic sourcing of high-purity sodium sulphate.
Sodium lauryl sulphate is an anionic surfactant derived from lauryl alcohol. The query why sodium lauryl sulphate used in toothpaste has a straightforward answer: it lowers surface tension, creating a rich lather that helps disperse toothpaste across teeth and gums. This mechanical action aids plaque removal and gives users that “clean mouth” sensation. Cosmetic formulators carefully control SLS concentration (typically 1–2%) to balance efficacy with low irritation. However, industrial buyers purchasing bulk chemicals need to note that SLS and sodium sulphate are not interchangeable. Confusing the two can lead to costly formulation errors.
While SLS is a surfactant, sodium sulphate serves entirely different functions in industrial processes. It’s a filler, a flux, a levelling agent, and a pulping chemical. Let’s break down the fundamentals.
Many procurement teams encounter both names on tender documents and search for “sodium sulphate” but land on SLS-related content. Here’s a quick comparison:
If you’re sourcing sodium sulphate, specifying “anhydrous, 99% min” avoids any confusion.
Understanding the physical properties of sodium sulphate is essential when designing detergent powders, glass batches, or dyeing recipes. Anhydrous sodium sulphate (Glauber’s salt in hydrated form) exhibits the following typical specifications:
The unique solubility profile – where dissolution is exothermic up to 32.4°C, then endothermic – influences detergent slurry preparation and helps control drying rates. In glass manufacturing, the high melting point and low cost make it an ideal fining agent and source of Na₂O.
Around 80% of global sodium sulphate output goes into laundry detergent powders. Here, anhydrous sodium sulphate acts as an inert filler, bulking the formula while promoting free-flowing properties and preventing caking. It also aids in conveying the detergent slurry during spray drying. With purity of 99%, Hailei Chemical’s sodium sulphate ensures no adverse interactions with surfactants like linear alkylbenzene sulfonate (LAS). Explore our detergent-grade sodium sulphate for formulations that demand consistency.
Flat glass and container glass manufacturers add sodium sulphate as a fining agent and source of sodium oxide. At high temperatures, it releases SO₂ and SO₃, which help remove bubbles from the melt. Its cost advantage over soda ash per unit of Na₂O makes it a strategic raw material for float glass lines. Typical dosage: 2–5 kg per tonne of batch.
In textile processing, sodium sulphate promotes even dye uptake on cotton and other cellulosic fibres. Reactive dye systems rely on salt to drive dye exhaustion; sodium sulphate’s mild, neutral electrolyte behaviour gives dyers precise control without aggressive chemical reactions. This improves colour yield and reduces reworks.
In the sulphate (kraft) pulping process, sodium sulphate is added to the recovery boiler to make up for chemical losses. It is reduced to sodium sulphide, a key active pulping agent. Consistent particle size and high purity prevent unwanted impurities in the green liquor cycle. Our technical grade sodium sulphate is engineered for reliable recovery boiler performance.
While our core focus is sodium sulphate, we often field the parallel query how to use sodium lauryl sulphate. For toothpaste formulators, SLS is pre-dissolved or dry-blended at 0.5–2.0% of the formula. It requires careful handling to avoid dust inhalation. The key takeaway for industrial buyers: SLS is a surfactant that creates foam, whereas sodium sulphate is a non-foaming filler and processing aid. If your specification calls for a bulking agent or flux, sodium sulphate is the correct material.
A common point of confusion is the distinction between sodium sulphate vs sodium sulphite. Both are sodium salts with similar spellings, but chemically and functionally they are distinct:
Mistaking one for the other can ruin a batch. Ordering sodium sulphate when you need an oxygen scavenger will not provide the required reduction potential. Likewise, deploying sodium sulphite as a glass flux introduces unwanted reducing conditions. Always verify the CAS number: Sodium sulphate is 7757-82-6; sodium sulphite is 7757-83-7. At Hailei Chemical, we provide clear product data sheets to eliminate such risks.
India has emerged as a significant production hub for natural and by-product sodium sulphate. Many buyers search for a sodium sulphate manufacturer in india to leverage cost advantages, but supply chain resilience demands evaluating multiple origins. Hailei Fine Chemical, based in China’s Shandong province, offers a reliable alternative with consistent 99% purity, competitive logistics via Qingdao port, and a structured quality management system. Our anhydrous sodium sulphate is produced from both natural brine and chemical by-product streams, ensuring steady availability even when Indian production faces seasonal monsoons or logistical bottlenecks.
When selecting a long-term partner, consider:
We work with major detergent, glass, textile, and pulp brands across 30+ countries, with technical support that helps you optimize sodium sulphate usage in your specific process.
Years of field experience have shown that even seasoned plants can overlook some basics:
We bridge the knowledge gap that leads to questions like why sodium lauryl sulphate used in toothpaste while delivering the industrial-grade sodium sulphate your process demands. Our technical team provides free formulation advice, accelerated sample dispatch, and logistics support from factory to your warehouse.
Whether you’re formulating a new detergent brand, optimizing a float glass line, or confronting inconsistent dye uptake, the right pure sodium sulphate makes a measurable difference. Request a quote today for sodium sulphate tailored to your specifications, or visit our product page to download the latest COA and MSDS.
For detergent manufacturers, the characteristics of sodium sulphate are not merely technical curiosities—they are make-or-break factors that dictate product quality, process efficiency, and total cost per tonne of finished powder. Whether you are operating a spray-drying tower in Nigeria, a dry-blending plant in Southeast Asia, or a liquid-to-powder detergent facility in Europe, the physical and chemical properties of the anhydrous sodium sulphate filler you choose will reverberate through every stage of production, from raw material handling to consumer satisfaction. At Hailei Chemical, we supply industrial-grade sodium sulphate that meets exacting specifications, enabling detergent formulators to achieve consistent density, flowability, and stability. In this comprehensive guide, we examine the sodium sulphate properties that matter most, how bulk density influences landed costs, why the price of sodium sulphate in Nigeria reflects global logistics dynamics, and how sodium feredetate compares to ferrous sulphate in the broader formulation context.
Sodium sulphate (Na₂SO₄) has been a cornerstone of the detergent industry for decades. Unlike active surfactants that perform the primary cleaning work, sodium sulphate serves as a functional filler and processing aid. Its inclusion can reach 20–50% of the total formulation by weight in many laundry powders. The reasons are compelling: it reduces the overall cost of the detergent base without compromising performance, it adjusts the bulk density to meet desired scoop-feel and packaging standards, and it prevents caking by absorbing residual moisture. However, these benefits are only realized when the sodium sulphate properties align with the specific manufacturing process and final product design. Subpar material with inconsistent characteristics of sodium sulphate can lead to segregation in the blender, dust generation, uneven dissolution, and even negative interactions with other ingredients such as enzymes or optical brighteners. Therefore, smart procurement begins with a granular understanding of what defines high-quality anhydrous sodium sulphate.
The characteristics of sodium sulphate can be divided into physical and chemical domains. Both are equally critical. When procurement managers and chemical engineers evaluate a supplier’s material, they typically examine the following properties in detail:
Particle size directly influences flowability, mixing homogeneity, and dust formation. In spray-dried detergent powders, the sodium sulphate filler typically has a mean particle size in the range of 100–300 µm, closely matching the size of the base detergent granules to prevent segregation. For dry-blended formulations, a slightly finer grade (50–150 µm) may be preferred to ensure even distribution among other fine ingredients. A narrow particle size distribution (PSD) is a hallmark of a premium product. If the PSD is too broad, smaller particles can migrate to the bottom of the blender during transport, causing inconsistent bulk density and ultimately variable dosing in the final package. Hailei Chemical’s anhydrous sodium sulphate is sieved and classified to tight specifications, minimizing fines and oversized particles.
Sodium sulphate bulk density is arguably the most influential physical characteristic for detergent manufacturing. Bulk density, expressed in g/cm³ or kg/m³, directly affects the weight-to-volume ratio of the powdered detergent. For a typical light-duty detergent, the target bulk density might be 0.3–0.5 g/cm³, which translates to 300–500 kg/m³, while compact or “heavy” detergents aim for 0.6–0.9 g/cm³. Anhydrous sodium sulphate as a filler can have a bulk density ranging from 500 to 800 kg/m³ in its loose pour state, but this can be manipulated by densification techniques and formulation choices. When sourcing, buyers must specify whether they require light or dense sodium sulphate. A mismatch can derail the entire filling line—cartons designed for a volume of 1 kg of powder may appear half-empty if the density is too high, or overflow if too low. Moreover, bulk density significantly impacts shipping costs: a higher bulk density material means more product per container, reducing freight per tonne. We will revisit this in the logistics and pricing discussion.
Industrial-grade sodium sulphate is typically 99% pure (on an anhydrous basis) as per GB/T 6009 or equivalent international standards. The remaining impurities—chlorides, calcium, magnesium, iron, and water-insoluble matter—must be tightly controlled. Even trace levels of iron can catalyse the decomposition of fragrance oils or react with optical brighteners, leading to off-colour spots in the detergent powder or reduced whitening power. Chloride contamination can accelerate corrosion of stainless-steel processing equipment over time. For detergent manufacturers, a purity specification of ≥99.0% Na₂SO₄ with iron ≤0.002% and chloride ≤0.35% is a common baseline. Hailei Chemical supplies anhydrous sodium sulphate 99% purity that meets these parameters consistently, supported by Certificate of Analysis (CoA) for every shipment. Insisting on a detailed CoA is a non-negotiable step in supplier qualification.
The pH of a 5% aqueous solution of sodium sulphate should be neutral (6–8). A strongly acidic or alkaline pH indicates residual acid or base from manufacturing processes, which can corrode equipment and alter the final detergent’s pH, potentially affecting enzyme activity or the stability of bleaching agents like sodium percarbonate. Routine pH checks during incoming material inspection are a quick and reliable quality gate.
Anhydrous sodium sulphate is hygroscopic to a degree, though less so than sodium chloride. However, if exposed to high humidity during storage or transport, it can absorb moisture and form hard lumps. These lumps are difficult to break and can clog hoppers or dosing screws. Proper packaging—typically in moisture-proof 25 kg or 1000 kg bags with inner liners—is essential. Additionally, the material’s tendency to cake correlates with its crystal structure and residual moisture content. Premium suppliers guarantee a moisture content of less than 0.5%.
Beyond its role in determining the physical properties of the final detergent, sodium sulphate bulk density is a master lever in supply chain economics. When a procurement manager in Lagos or Port Harcourt evaluates the price of sodium sulphate in Nigeria, the quoted FOB or CIF price per metric ton is only half the picture. The number of tonnes that can be loaded into a 20-foot or 40-foot container depends on the bulk density of the material as packed. For example, a light sodium sulphate with a packed bulk density of 650 kg/m³ might allow only 18 metric tons in a standard 20-foot container (assuming a typical 28–30 m³ internal volume and stowage efficiency), whereas a denser grade at 850 kg/m³ could fit 24–25 tons. The cost per ton delivered will therefore be significantly lower for the denser product, all other factors being equal. Savvy buyers in West Africa are increasingly specifying minimum bulk density levels to shave freight costs. At Hailei Chemical, we work with clients to tailor the product’s density to their logistical and formulation needs, whether they require standard light material or densified grades that maximize container utilization without sacrificing flowability.
A common point of confusion among new formulators and even some procurement specialists is the distinction between sodium sulphate fillers and other sodium or iron-based additives. The keyword sodium feredetate vs ferrous sulphate often appears in technical queries, so clarity is vital. Sodium feredetate (sodium iron EDTA) is a chelating agent and bioavailable iron source, not a filler. It is sometimes included in detergent formulations as a stain-removal enhancer because it can sequester iron and manganese from hard water, preventing them from interfering with detergent action. Ferrous sulphate, on the other hand, is a reducing agent and a source of iron ions; it finds limited use in certain industrial cleaning applications or as a flocculant but is rarely used in household laundry detergents due to potential staining. Neither sodium feredetate nor ferrous sulphate can substitute for sodium sulphate as a bulk filler because they do not provide the same inert, neutral-pH, high-bulk characteristics. In fact, using them in high concentrations would be prohibitively expensive and chemically reactive. Thus, the comparison “sodium feredetate vs ferrous sulphate” is really about niche functionality, while sodium sulphate remains the undisputed choice for volume and cost optimization. Understanding the characteristics of sodium sulphate helps formulators avoid misguided substitution attempts that could destabilize the entire blend.
The price of sodium sulphate in Nigeria is a key concern for the country’s growing detergent industry. Nigeria imports the majority of its industrial chemicals, and sodium sulphate is no exception. The final landed cost per ton is influenced by several variables: the FOB price from the Chinese or European supplier, ocean freight rates (which have been volatile in recent years), insurance, customs duties (often 5–10% for chemical raw materials), and local port handling charges. Additionally, the devaluation of the Nigerian Naira against the US Dollar directly impacts affordability. A typical CIF Lagos price for anhydrous sodium sulphate 99% might range between $200 and $350 per metric ton, depending on the contract size, packaging, and specific quality parameters. But as discussed earlier, effective price per unit volume of finished product also depends on bulk density. Buyers who negotiate on chemical specifications alone may pay less per ton but more per cubic meter of detergent produced if they inadvertently purchase low-density material. Forward-thinking procurement managers in Nigeria are therefore integrating both purity and bulk density into their supplier scorecards. At Hailei Chemical, we help Nigerian detergent manufacturers optimize total delivered cost by offering consistent, high-bulk-density grades and flexible shipping options including LCL and full-container loads to Apapa and Tin Can Island ports. We also provide all necessary documentation—MSDS, CoA, and certificate of origin—to facilitate smooth customs clearance.
Securing a reliable source of sodium sulphate requires more than comparing price lists. A robust supplier evaluation process should include these steps:
Hailei Chemical excels on all these fronts. Our sodium sulphate is sourced from a modern production base in Weifang, Shandong, leveraging abundant local mineral resources and energy-efficient manufacturing. Every batch is analysed for sodium sulphate properties including bulk density, purity, iron content, chloride content, and pH, with data logged for full traceability. We understand that for a detergent plant running 24/7, a single container of off-spec filler can result in hours of costly downtime.
Even with premium raw material, how you handle sodium sulphate on-site can influence the final characteristics of your detergent. Follow these best practices:
By mastering the characteristics of sodium sulphate and managing them throughout your supply chain, you transform a simple commodity into a competitive advantage.
As a leading Chinese exporter of fine chemicals, Hailei Chemical is dedicated to supporting detergent manufacturers worldwide with reliable, high-quality raw materials. Our anhydrous sodium sulphate is consistently produced to meet the demanding physical and chemical criteria outlined in this article. We offer custom packaging, multiple grain sizes, and the logistical expertise to serve markets from Africa to Latin America and beyond. Our technical team understands the intricate relationship between sodium sulphate properties and detergent performance, and we are always ready to assist with formulation challenges or supply chain optimization.
Ready to secure a stable, cost-effective supply of sodium sulphate that meets your precise bulk density and purity requirements? Request a quotation today and let our specialists design a supply programme tailored to your detergent manufacturing operation. For more detailed product specifications, visit our sodium sulphate product page.
For industrial buyers managing procurement budgets for detergent powder, glass, or pulp production, securing the right sodium sulphate wholesale price directly impacts profit margins. Whether you purchase anhydrous sodium sulphate by the container load or negotiate annual contracts, understanding market dynamics, quality specifications, and supplier landscapes is essential to making informed decisions. At Weifang Hailei Fine Chemical Co., Ltd., we supply high-purity 99% Na2SO4 to manufacturers worldwide, and this guide draws on our decades of export experience to help you optimize your sourcing strategy.
Before diving into price factors, let’s clarify exactly what sodium sulphate is and how its basic characteristics influence its use and cost.
The compound Na2SO4 goes by several names depending on its hydration state and sector. The what is sodium sulphate common name question often arises because different industries use different terms. The anhydrous form, which we produce at 99% purity, is historically called salt cake in heavy chemical industries, a name originating from the old Leblanc process where it was a byproduct of salt and sulfuric acid. The decahydrate (Na2SO4·10H2O) is universally known as Glauber’s salt, named after the 17th-century chemist who first described its medicinal properties. In mineral form, natural anhydrous sodium sulphate is called thenardite. When procurement teams search for “salt cake” or “Glauber’s salt,” they are often looking for the same core substance, though the anhydrous form preferred for detergents and glass delivers far more active material per tonne.
The colour of sodium sulphate is uniformly white in its pure state. High-purity anhydrous sodium sulphate appears as a free-flowing white crystalline powder or granular solid. Any off-white, grey, or yellowish tint typically signals the presence of iron, organic impurities, or insufficient refining. For detergent manufacturers, a bright white colour is non-negotiable because it directly affects the final powder’s appearance. Glassmakers also require iron-free sodium sulphate to avoid unwanted green or brown discolouration in container and flat glass. Always request a specification sheet that lists whiteness index (R457 brightness above 90%) along with purity.
A common formulation concern is: is sodium sulphate soluble enough for my application? Yes—sodium sulphate exhibits excellent water solubility, but with a unique temperature-dependent curve that every production manager should know. Anhydrous Na2SO4 dissolves readily in water, reaching a maximum solubility of about 49.7 g per 100 mL at 32.4°C. Below that temperature, solubility increases with heat; above 32.4°C, the solubility actually decreases slightly and the stable solid phase transitions to the anhydrous form. In practical terms, this means that your process water temperature can significantly affect dissolution rates and the risk of crystallisation fouling on equipment surfaces. For textile dyeing auxiliaries and kraft pulping liquors, maintaining process tanks above 40°C ensures complete dissolution of the sodium sulphate used as a levelling agent or cooking chemical. For detergent slurry preparation, the hydrate form can absorb moisture during storage, so bagging integrity is vital to prevent caking.
Obtaining a favorable sodium sulphate wholesale price requires awareness of the underlying cost drivers. Here are the main levers that suppliers and buyers must navigate.
The query manufacturers of sodium sulphate in india highlights one of the key production hubs. India is indeed a major producer, with companies like Nirma Limited, Atul Ltd, and several Gujarat-based operators producing large volumes, mainly as a byproduct of rayon or H-acid manufacture. Indian suppliers often export to Africa, the Middle East, and ASEAN markets, offering competitive pricing given relatively low domestic salt and labor costs. However, Indian production is frequently in the form of anhydrous salt cake with purity ranging from 96% to 99%, and some lots may contain organic traces from the rayon process, which makes them less suitable for crystal glass or high-end detergents.
China remains the world’s single largest exporter of synthetic and natural sodium sulphate. In Shandong province alone, clusters of manufacturers—including Weifang Hailei Fine Chemical’s sodium sulphate facility—leverage reliable sulfuric acid and salt supply chains, advanced dehydration technologies, and rigorous quality control to deliver consistent 99% purity, ultra-white, granular anhydrous sodium sulphate. Our position on the Bohai Rim means short transit to Qingdao port, minimising inland freight before export. When you compare landed prices from Indian versus Chinese manufacturers, factor in not just the per-tonne quote but also shipment frequency, documentation reliability, and after-sales technical support.
Smart purchasing goes beyond requesting quotes. Here are proven tactics to compress your unit cost without risking supply security.
A 99% purity guarantee is a starting point, but procurement managers need to examine the remaining 1% and the physical properties that dictate performance in specific applications.
| Parameter | Typical Value (Hailei Grade) | Importance |
|---|---|---|
| Na2SO4 content | ≥ 99.0% | Filler efficiency, glass refining |
| Water insolubles | ≤ 0.05% | Avoids specks in detergent powder, defects in glass |
| Iron (as Fe) | ≤ 0.002% (20 ppm) | Critical for colour stability in glass and white detergents |
| pH (1% solution) | 6.0 – 8.0 | Corrosion control in textile and paper processes |
| Whiteness | ≥ 90 (R457) | Ensures brilliant detergent powder appearance |
| Particle size (mesh) | Customisable 80–200 mesh | Dissolution rate, anti-segregation in blends |
When you evaluate bids, don’t simply rank by per-tonne price. A slightly more expensive supplier that offers a tailored particle size distribution reducing segregation in your detergent blend may lower your rework rate and actually improve your overall cost picture. Use Hailei Chemical’s detailed product specification sheet as a benchmark during your vendor evaluation.
Consider a mid-sized detergent plant in Southeast Asia producing 25,000 MT of laundry powder annually. High-density detergent powder formulations typically contain 20–40% sodium sulphate as an inert filler. At a raw sulfate cost of $100 per tonne, the plant spends roughly $0.5 to $1 million per year on this single ingredient.
By switching from an Indian supplier whose 97% product sometimes contained visible dark specks (organic impurities) to a Chinese 99% pure, ultra-white product, the plant eliminated the need for additional optical brighteners and cut batch rejection rates by 2%. The sodium sulphate wholesale price increased by $8 per tonne, but the savings in brightener chemicals and rework far exceeded the premium. Moreover, the consistent bulk density of the Chinese product allowed the pneumatic conveying system to operate without blockages, reducing maintenance downtime. This example illustrates why apparent price per tonne is not the only figure that matters—total cost of ownership should guide sourcing choices.
We touched on solubility earlier, but storage and handling strongly influence material efficiency. Anhydrous sodium sulphate is hygroscopic: it will absorb moisture from the air, potentially forming a hard crust or even partially converting to Glauber’s salt (decahydrate). This not only reduces the effective Na2SO4 content but also makes the powder difficult to meter accurately. Best practices include:
Understanding the solubility and hygroscopic nature of sodium sulphate also helps you assess whether a quoted product’s moisture content (typically <0.1%) is realistic and whether the supplier’s packaging will protect the material during the ocean voyage to your factory.
What is the typical sodium sulphate wholesale price range?
Depending on purity, origin, and contract size, anhydrous sodium sulphate FOB China currently ranges between $85 and $140 per metric tonne. Natural-based product tends toward the lower end, while synthetic grades with extra-low iron and high whiteness sit at the higher end. Freight and duties are additional.
How does the colour of sodium sulphate affect its applications?
The colour of sodium sulphate directly influences product acceptance in white detergents and clear glass. Any yellowish or grey tone indicates impurities that can cause rejection. Always ask for a colour/whiteness certification.
Are manufacturers of sodium sulphate in India reliable?
Many manufacturers of sodium sulphate in india are reliable and hold ISO certifications. However, their product characteristics (byproduct origins, trace organics) may differ from synthetic Chinese product. Request a technical data sheet and a retained sample from the actual lot offered.
What does the common name “salt cake” tell me about the product?
The what is sodium sulphate common name “salt cake” is a legacy term. It often implies an anhydrous form, but without modern quality checks, some buyers still associate it with lower-purity byproduct streams. Always clarify that you require technical grade, 99% Na2SO4, and not unrefined cake from a rayon plant.
How can I test is sodium sulphate soluble quickly upon arrival?
Take a 10 g sample and add to 100 mL of water at a controlled temperature, say 30°C. It should dissolve almost completely within a few minutes with gentle stirring, leaving minimal residue. Any significant insoluble fraction (beyond 0.05% spec) indicates a quality problem.
Your search for a consistent, high-purity sodium sulphate supply at a fair wholesale price ends with a trusted partner. Weifang Hailei Fine Chemical Co., Ltd. offers 99% anhydrous sodium sulphate, customised particle sizes, and full regulatory documentation (COA, MSDS, REACH) to simplify your importing process. Whether you need a single trial container or a multi-year supply agreement, our logistics team coordinates FCL shipments from Qingdao port to your nearest destination.
Compare our quality, evaluate our transparent pricing, and experience the difference of working with a manufacturer that understands your operational KPIs. Request a sodium sulphate wholesale price quote today, or explore detailed technical specifications on our sodium sulphate product page. Let’s build a cost-efficient, long-term supply partnership that strengthens your competitive edge.
For detergent manufacturers formulating with sodium lauryl ether sulphate (SLES), the selection of a dependable filler is a critical production decision. While SLES drives the foaming and degreasing action, it is sodium sulphate (Na2SO4) that provides the necessary bulk, flowability, and cost structure without compromising cleaning power. At Hailei Chemical, we supply a consistent 99% purity anhydrous sodium sulphate precisely engineered for SLES-based powder detergents. This article examines why sodium sulphate remains the filler of choice, how its chemical identity interacts with sodium lauryl ether sulphate, and what procurement professionals must verify when sourcing high-purity material for competitive production lines.
Modern laundry powders are complex blends where surfactants like sodium lauryl ether sulphate deliver stain removal, while fillers create the right powder density, prevent caking, and reduce cost per kilo. Sodium sulphate fulfills this role for several technical reasons:
When working with sodium lauryl ether sulphate, which is typically supplied as a 70% active paste or high-concentration liquid, formulators need a dry carrier that can absorb residual moisture and enable spray-drying or dry-blending processes. Anhydrous sodium sulphate excels here, acting as a processing aid that streamlines production.
Buyers often ask, “what is sodium sulfate formula” to confirm they are ordering the correct compound. The answer is Na2SO4, a neutral salt of sulfuric acid and sodium hydroxide. In its anhydrous form it contains no water of crystallization, while the decahydrate (Na2SO4·10H2O) is known as Glauber’s salt. For detergent manufacturing, the anhydrous variety is mandatory because the hydrated form would introduce unwanted moisture, increase shipping costs, and throw off formulation ratios.
From a chemical perspective, sodium sulphate does not directly react with sodium lauryl ether sulphate. SLES is an anionic surfactant with a sulfate head group, and the presence of sulfate ions (SO4²⁻) from sodium sulphate can actually contribute to a mild electrolyte effect that thickens liquid surfactant systems. In powder detergents, this interaction is subtle but beneficial: sodium sulphate helps control the rate of dissolution, preventing lump formation when the powder contacts water and allowing the SLES to foam effectively. This synergy makes the pairing of high-purity Na2SO4 with SLES a standard in the industry.
When your formulation centers on sodium lauryl ether sulphate, every additive must meet strict purity thresholds. Weifang Hailei Fine Chemical supplies anhydrous sodium sulphate at 99% min purity, with controlled iron (Fe ≤ 0.002%) and water-insoluble matter (≤ 0.05%). Key technical parameters include:
| Parameter | Specification |
|---|---|
| Na2SO4 content | ≥ 99.0% |
| Moisture | ≤ 0.2% |
| Water insolubles | ≤ 0.05% |
| Whiteness | ≥ 82 (Hunter Lab) |
| pH (5% solution) | 6.0–8.0 |
| Bulk density | 1.3–1.6 g/cm³ |
This anhydrous sodium sulphate is produced via the forced-evaporation process from natural brine, resulting in a free-flowing, white crystalline powder that mixes evenly with SLES paste or spray-dried granules. The low moisture content is especially critical: excessive water can hydrolyze sodium lauryl ether sulphate during storage, leading to off-odors and reduced performance.
Procurement teams frequently encounter multiple names for the same substance. What is sodium sulphate common name in the chemical market? It depends on the form:
When ordering for detergent lines that rely on sodium lauryl ether sulphate, always specify “anhydrous sodium sulphate 99%” to avoid receiving the decahydrate or lower-purity salt cake, which can contain chlorides that corrode equipment and harm surfactant stability.
A pressing query for any detergent factory is sodium sulphate wholesale price. Contract pricing for industrial-grade anhydrous sodium sulphate typically ranges from USD 80 to USD 160 per metric ton FOB China, depending on purity, particle size, and packaging (25 kg bags, 1000 kg supersacks, or bulk). However, price alone is a poor supplier selection metric. Buyers must evaluate:
Hailei Chemical’s sodium sulphate is produced in Weifang, Shandong, one of China’s largest chemical manufacturing hubs. Our integrated supply chain and 20+ years of export experience minimize lead times and quality risks for detergent producers worldwide.
Detergent powders formulated with sodium lauryl ether sulphate are manufactured by two main routes: high-temperature spray drying and post-addition dry blending. In both cases, sodium sulphate strongly influences process efficiency.
In the spray-drying tower, a slurry of SLES, builders (zeolites or sodium carbonate), and sodium sulphate is atomized into a hot air stream. The sodium sulphate recrystallizes as the water evaporates, forming lightweight, absorbent beads. A high-purity, fine-grade Na2SO4 ensures that the slurry remains pumpable and that the dried powder has a uniform particle distribution. If the sodium sulphate contains insoluble grit or coarse crystals, nozzle clogging and irregular bead formation result, increasing rework.
Many modern high-density powders are produced by dry neutralization or agglomeration. Here, sodium sulphate is blended with a pre-neutralized SLES paste and other granular components. The anhydrous sulphate absorbs excess moisture, preventing the formation of sticky agglomerates. Its cubic crystal habit contributes to excellent flow, allowing the mix to travel smoothly through pneumatic conveyors and packing machines.
When purchasing anhydrous sodium sulphate for use alongside sodium lauryl ether sulphate, request a Certificate of Analysis (CoA) that includes at least these tests:
While this article focuses on the interplay with sodium lauryl ether sulphate, sodium sulphate’s versatility extends to glass manufacturing (as a fining agent), textile dyeing (to level direct and reactive dyes), and kraft paper pulping (as a make-up chemical in the recovery cycle). Hailei Chemical supplies sodium sulphate to all these sectors with tailored specs. The same 99% anhydrous grade used in SLES detergents also satisfies the stringent requirements of float glass production, where it prevents scum formation and improves melt homogenization.
Detergent formulators sometimes consider replacing sodium sulphate with alternatives such as sodium chloride, sodium carbonate, or even bentonite clay to reduce costs or achieve unique properties. A comparison reveals why Na2SO4 remains superior when sodium lauryl ether sulphate is the primary surfactant:
Thus, sodium sulphate remains the most chemically compatible, cost-effective, and consumer-acceptable filler for SLES systems.
Sodium sulphate is listed on all major chemical inventories (TSCA, EINECS, DSL) and is not classified as hazardous. However, detergent brands committed to sustainability should verify that their anhydrous sodium sulphate comes from a supplier with responsible waste management and low-carbon production methods. Hailei Chemical recovers process heat and minimizes water consumption, aligning with the green procurement goals of multinational FMCG companies. The biodegradability of SLES is not negatively impacted by sodium sulphate; sulfate ions exist naturally in water bodies and pose no ecotoxicity concerns at typical laundry discharge levels.
Smart buyers treat sodium sulphate not as a commodity afterthought but as a strategic material. Follow these steps to optimize sourcing:
Myth 1: “Sodium sulphate is just a cheap filler and adds no value.”
Fact: It enhances product aesthetics, controls density, and prevents caking, directly impacting consumer brand perception.
Myth 2: “Any industrial-grade sodium sulphate will work with SLES.”
Fact: Impure grades introduce chloride and iron that shorten shelf life and can cause equipment corrosion.
Myth 3: “Anhydrous and hydrated are interchangeable.”
Fact: The decahydrate (what is sodium sulphate common name? Glauber’s salt) contains over 55% water by weight. Using it in an SLES powder formula would create a sticky mess and ruin the surfactant balance.
Detergent manufacturers who rely on sodium lauryl ether sulphate as a key surfactant cannot afford filler inconsistency. Weifang Hailei Fine Chemical Co., Ltd. produces a uniform, 99% pure anhydrous sodium sulphate that meets the world’s most demanding powder detergent specifications. Our technical team understands the surfactant-filler interface and can advise on optimal particle size, bulk density, and packaging for your production line.
Whether you are expanding capacity, reformulating for cost reduction, or entering new markets, source your sodium sulphate from a partner with a proven track record. Request a quote today or visit our sodium sulphate product page to download the full technical data sheet and request a sample.
If you’ve ever asked, “what is the everyday name for sodium sulphate,” you’re not alone. This ubiquitous industrial chemical travels under several monikers depending on its hydration state, purity, and the sector using it. In detergent plants, it’s simply salt cake. In textile dye houses, it might be called anhydrous sodium sulfate. And in glass furnaces or laboratories, you’ll hear Glauber’s salt—though that name technically belongs to the decahydrate form. For procurement managers sourcing bulk raw materials, understanding these aliases is critical to avoid costly specification errors. This guide unpacks the everyday names, the science behind them, and why 99% purity anhydrous sodium sulphate from a reliable supplier like Hailei Chemical’s sodium sulphate is the backbone of numerous industrial processes.
The short answer: it depends. Sodium sulphate (Na2SO4) exists in two main commercial forms. The anhydrous variety—the one overwhelmingly used as a detergent filler, in glassmaking, and textile processing—is called salt cake in everyday industrial language. The hydrated decahydrate (Na2SO4·10H2O) is universally known as Glauber’s salt, named after the German-Dutch alchemist Johann Rudolf Glauber who first synthesized it in the 17th century. In modern B2B trade, however, “sodium sulphate” almost always refers to the anhydrous powder, and “salt cake” is its most persistent colloquial name. You might also encounter older terms like sulfate of soda or simply Na2SO4. Recognizing these names prevents miscommunication when issuing tenders, reviewing certificates of analysis, or comparing supplier quotes.
The multiplicity stems from history and manufacturing pathways. Glauber originally prepared the salt from sulfuric acid and common salt, then observed its cooling sensation and laxative effect—earning it the name sal mirabile (miraculous salt). For centuries it remained a medicinal curiosity before the chemical industry scaled up production in the 19th century via the Mannheim process, which produced synthetic hydrochloric acid and sodium sulphate as a co-product. The resultant anhydrous mass was a dense, hard cake that required crushing; thus, plant operators and traders simply called it salt cake. In regions like North America, natural deposits of the decahydrate in saline lakes gave rise to the mineral mirabilite, often marketed as Glauber’s salt. Today, synthetic salt cake dominates global supply, and the term persists even though modern prilling and drying technologies yield a free-flowing powder rather than a cake.
In procurement documents, technical datasheets, and daily plant-floor conversation, salt cake is the go-to term for anhydrous sodium sulphate. When a detergent manufacturer asks for “99% salt cake,” they mean high-purity Na2SO4 with essentially no water of crystallization. This precise vocabulary matters because the decahydrate (Glauber’s salt) contains over 55% water by weight—a massive difference that would derail formulations. As a buyer, specifying “salt cake” clearly communicates your requirement for the anhydrous sodium sulphate used as a filler in powder detergents, a refining agent in glass, or a levelling auxiliary in textile dyeing. The term also implies a heavy bulk density (typically 1.4–1.6 g/cm³) and free-flowing characteristics that the crystalline decahydrate lacks.
While less common in bulk industrial purchasing, Glauber’s salt (sodium sulphate decahydrate) still owns a legitimate everyday name. Its high water content offers latent heat storage properties, making it a candidate for phase-change materials in thermal energy storage. In analytical chemistry, Glauber’s salt serves as a stable standard. Historically, it was even used as a laxative. Today, however, most large-volume consumers opt for anhydrous salt cake to avoid shipping diluted product. If a supplier offers “sodium sulphate” at a suspiciously low price, careful buyers confirm whether the quote refers to anhydrous or decahydrate basis—a classic pitfall that differentiating the everyday names helps avoid.
A foundational knowledge of the sodium sulphate formula and properties equips industrial buyers to assess quality and suitability. The chemical formula for the anhydrous salt is Na2SO4. Its molecular weight is 142.04 g/mol. The decahydrate formula is Na2SO4·10H2O with a molecular weight of 322.20 g/mol. At Hailei Chemical, our standard product meets the following typical specifications:
The high melting point is critical for glass manufacturing, where sodium sulphate acts as a fining agent to remove bubbles without volatilizing. In detergents, the neutral pH and excellent flowability make salt cake the ideal inert filler. Understanding these properties helps buyers distinguish between generic sodium sulphate and premium grades that minimize impurities like iron or chlorides, which can stain textiles or corrode equipment. Always request a certificate of analysis (CoA) to confirm the formula and properties align with your process requirements.
The phrase “uses of sodium sulphate in daily life” might sound consumer-oriented, but the reality is that salt cake is a workhorse in manufacturing the products we all use every day. Its hidden hand extends across:
Laundry detergent manufacturers blend sodium sulphate at 20–50% by weight as a cost-effective bulking agent. It improves powder flow, prevents caking, and helps standardize scoop sizes without altering cleaning performance. For every box of detergent on a supermarket shelf, salt cake likely constitutes a major fraction. Procurement teams in this sector demand consistent particle size distribution and low chloride to avoid corrosion of automatic dosing machines. Hailei Chemical supplies precisely this: 99% pure sodium sulphate for detergent manufacturing.
In float glass, container glass, and specialty glass, sodium sulphate serves as a flux and fining agent. It helps remove gas bubbles and prevents scum formation on the molten glass surface. The glass industry consumes massive tonnages, with typical addition rates of 0.5–2% of the batch weight. Here, the everyday name “salt cake” is standard in recipe cards and purchase orders.
Sodium sulphate’s ability to promote level dyeing of reactive and direct dyes makes it indispensable in textile mills. It helps control the rate of dye exhaustion, ensuring uniform color on cotton, viscose, and blends. The required purity is high; metallic impurities like iron must be minimal to prevent shade variation. When textile plant managers refer to “the sulphate,” they usually mean anhydrous sodium sulphate from their chemical store.
In the kraft process, sodium sulphate is added to the recovery cycle to replace sodium and sulfur lost during pulping. It is reduced to sodium sulfide in the recovery boiler, replenishing the pulping liquor. The term “salt cake” is historically used in pulp mills, dating back to when the chemical was obtained as a byproduct cake from hydrochloric acid plants.
Sodium sulphate acts as a precursor for making sodium sulfide, sodium silicate, and precipitated silica. These downstream chemicals reappear in detergents, construction materials, and water treatment—proving how one bulk chemical under its everyday name weaves through the entire chemical supply chain.
Beyond its low cost, sodium sulfate benefits span functional, logistical, and environmental dimensions that forward-thinking procurement managers evaluate:
For B2B users, the key benefit remains the combination of reliable purity and competitive landed cost. When sourcing from Hailei Chemical, consistency across shipments means fewer production adjustments and less downtime.
Consumer interest in “best sodium sulphate free shampoo” has sparked a trend that seems to threaten traditional sodium sulphate markets. Sulfate-free personal care formulations avoid sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES), but they are distinct from sodium sulphate itself. However, the “sulfate-free” label has created confusion, and some marketers mistakenly lump sodium sulphate as a harsh chemical to avoid. In reality, sodium sulphate is not a surfactant; it’s a filler and processing aid that does not interact with skin or hair. The industrial detergent sector remains unaffected by this trend—laundry and dishwashing powders continue to demand millions of tonnes of salt cake globally. Nevertheless, the personal care shift may encourage some detergent manufacturers to explore sulfate-free surfactants, slightly altering the formulation landscape but not diminishing the need for an inert, low-cost filler like sodium sulphate. If anything, new categories of cleaning products might still use sodium sulphate for its bulking properties. Savvy buyers monitor these market signals to adjust sourcing strategies but recognize that the everyday name “salt cake” will stay firmly in the industrial vocabulary.
When your plant’s product quality hangs on a specification sheet, you need more than just a name. The top-tier anhydrous sodium sulphate from Hailei Chemical meets the stringent requirements of ISO 9001-managed production. Here’s what to look for when comparing suppliers:
Request a pre-shipment sample and full CoA with every lot. By doing so, you confirm that what you ordered—whether you call it salt cake, anhydrous sodium sulfate, or simply “the sulphate”—exactly matches what arrives at your receiving dock.
International chemical procurement is full of trivial details that become critical. A purchase order that reads “Glauber’s salt” might inadvertently lead a supplier to ship decahydrate crystals, drastically increasing your freight cost for water. Conversely, specifying “salt cake” universally communicates anhydrous sodium sulphate in most Asian and Middle Eastern markets. At Hailei Chemical, we ensure that every inquiry for “what is the everyday name for sodium sulphate” resolves into a clear technical specification. Our export documentation consistently lists the product as “Sodium Sulphate Anhydrous 99% min, also known as salt cake,” removing ambiguities. With our production base in Weifang, close to Qingdao port, we offer competitive ocean freight to major global destinations. Efficient container loading—25–27 metric tons per 20’ container—maximizes your freight economy.
Modern chemical buyers integrate ESG (Environmental, Social, Governance) criteria into supplier selection. Sodium sulphate scores well: it is not classified as hazardous under GHS, it is readily biodegradable to sulfate ion, and its production from natural brine or as a byproduct of other processes often has a modest carbon footprint relative to synthetic organic chemicals. Hailei Chemical is committed to sustainable manufacturing, continuously optimizing energy use and waste recycling. When you source sodium sulphate anhydrous from Hailei, you can request life-cycle data that supports your sustainability reports. The everyday name may be salt cake, but the modern reality is a clean, consistent chemical that helps you meet your product’s ecological goals.
Yes, in industrial contexts, “salt cake” is the common name for anhydrous sodium sulphate (Na2SO4) with no water of crystallization. It typically contains at least 99% Na2SO4 and is used as a filler, fining agent, and chemical intermediate.
Glauber’s salt is sodium sulphate decahydrate (Na2SO4·10H2O), containing over 55% water by weight. Salt cake is the anhydrous form. On a weight basis, you would need over twice as much Glauber’s salt to obtain the same active Na2SO4, making salt cake far more economical for bulk applications.
The name originates from the Mannheim process, where sodium sulphate formed a hard cake after the reaction of salt and sulfuric acid. Even though modern production yields a powder, the term stuck in the detergent industry as a practical shorthand.
It is generally not recommended because the high water content will alter your formulation’s active concentration. Some niche applications, like thermal storage, specifically want the decahydrate. Always confirm the required hydration state before purchasing.
Now that you know “what is the everyday name for sodium sulphate” and why it matters, the next step is securing a consistent, high-purity supply. Hailei Fine Chemical Co., Ltd. produces 99% min anhydrous sodium sulphate—salt cake—tailored for detergent, glass, textile, and pulp industries. Our Weifang facility ensures short lead times and competitive pricing. Whether you require bagged material or bulk shipment, our quality assurance team will support your production with reliable specifications and documentation.
Ready to place an order or request a sample? Get a quote today and experience the difference of working with a dedicated sodium sulphate supplier who understands your needs—from everyday names to critical quality metrics.
For procurement managers and chemical engineers in the textile industry, the difference between a brilliant, colorfast fabric and a disappointing wash-out often comes down to a single, inexpensive white powder: sodium sulphate. Yet, when purchasing teams in India’s textile hubs begin a sourcing cycle, many instinctively type “sodium sulphide manufacturers in Gujarat” into their search bars. While Gujarat is indeed a powerhouse for sodium sulphide production—used heavily in leather tanning and ore flotation—the chemical that truly reigns in the dyehouse is sodium sulphate anhydrous (Na₂SO₄), the workhorse salt that sets reactive dyes into cellulosic fibers. Understanding this distinction, along with sodium sulphate’s physical properties, current price per kilogram, and supply chain dynamics, is critical for any buyer looking to secure a reliable, cost-effective source. This comprehensive guide will walk you through how sodium sulphate functions as the “salt to set dye in fabric,” compare its role with other sodium chemicals, demystify why sodium sulphide manufacturers in Gujarat appear in your searches, and equip you with the procurement insights needed to make an informed supplier choice.
If you have ever walked through a textile mill and heard dyers refer to “adding salt,” they are not speaking of table salt (sodium chloride). In reactive dyeing of cotton, viscose, and other cellulosic fibers, the “salt” is almost always sodium sulphate. But why is it so essential? During the dyeing process, reactive dye molecules are negatively charged in an aqueous bath. Cellulose fibers also develop a negative surface charge when wet, causing electrostatic repulsion that prevents the dye from exhausting onto the fabric. Sodium sulphate acts as a dyeing auxiliary that neutralizes this charge barrier. The high ionic strength provided by the dissociated sodium and sulphate ions compresses the electrical double layer around the fiber, allowing the dye to approach, adsorb, and eventually form covalent bonds with the cellulose under alkaline conditions. This entire mechanism is why the search query “salt to set dye in fabric” rightly leads to sodium sulphate.
Procurement specialists should note that not just any sulphate salt will do. Sodium sulphate’s effectiveness stems from its high solubility (up to 420 g/L at 30°C) and the fact that it releases two sodium ions per molecule, giving a stronger ionic boost than sodium chloride at equivalent weight concentrations. Moreover, unlike sodium chloride, sodium sulphate does not introduce chloride ions that can corrode stainless steel dyeing machines over time. For these reasons, anhydrous sodium sulphate with a purity of 99% minimum—exactly the grade supplied by Weifang Hailei Fine Chemical Co., Ltd.—is the standard in textile mills from Surat to Shanghai. To view detailed product specifications, visit our sodium sulphate product page.
B2B buyers often encounter a confusing overlap in chemical nomenclature. A common question that arises is: “Why is sodium lauryl sulphate used in toothpaste?”—and could that substance serve as a dye auxiliary? The answer is a firm no. Sodium lauryl sulphate (SLS) is an anionic surfactant, a completely different molecule from sodium sulphate (Na₂SO₄). SLS (CH₃(CH₂)₁₁OSO₃Na) is used in toothpaste and personal care products for its foaming and detergency properties. Its long hydrocarbon chain makes it an effective emulsifier, but it is entirely unsuitable for dye fixation because it lacks the simple ionic strength mechanism of an inorganic salt. Worse, SLS can interact with dyestuffs and interfere with level dyeing. When sourcing the right salt to set dye in fabric, always specify sodium sulphate anhydrous, not any lauryl compound. This confusion frequently arises when buyers unfamiliar with chemical naming attempt to cross-reference ingredients, so procurement teams should communicate explicitly with suppliers to confirm the CAS number (7757-82-6) rather than relying on commercial names.
Understanding the physical properties of sodium sulphate is not just an academic exercise—it directly influences handling, storage, and dissolution in an industrial dyehouse. Sodium sulphate anhydrous is a white, crystalline powder with a density of 2.68 g/cm³, a melting point of 884°C, and high hygroscopicity. These characteristics have practical implications:
These physical properties of sodium sulphate are often overlooked by buyers who focus solely on price per kilogram. However, a load that arrives with lumps due to moisture adsorption will cost far more in rejections and production downtime than a few cents saved on a low-purity supply. Always request a certificate of analysis (COA) that includes moisture content (≤0.2% for anhydrous grade) and pH before confirming an order.
Procurement managers tracking the price of sodium sulphate per kg will notice significant disparities between domestic Indian quotations and FOB China offers. As of mid-2025, typical price ranges are:
| Origin & Grade | Price (USD/kg) | Notes |
|---|---|---|
| China, 99% min, anhydrous, FOB | $0.12 – $0.18 | Large bag (1000 kg) quantities; lower end for 100+ MT annual contracts |
| India (Gujarat), small pack, ex-works | ₹12 – ₹20/kg (approx. $0.14 – $0.24) | Often byproduct sulphate; purity may fluctuate |
| European refined grade | $0.35 – $0.50 | Synthetic route, premium purity, REACH compliant |
The price of sodium sulphate per kg is influenced by feedstock (natural mineral thenardite vs. synthetic from HCl neutralization), energy costs for drying to anhydrous form, and logistics. As a leading Chinese exporter, Weifang Hailei Fine Chemical Co., Ltd. leverages massive production scale and direct access to raw material sources in Shandong to offer competitive FOB prices that consistently beat local Gujarat suppliers on a delivered-cost basis to major textile markets like Southeast Asia, Bangladesh, and the Middle East. When comparing costs, always factor in the hidden costs of inconsistent purity—a 97% material may contain 2% chloride impurities that can corrode equipment and ruin dyebaths, making the 99% pure sodium sulphate the more economical choice in the long run.
India’s Gujarat state has long been a chemical manufacturing powerhouse, and indeed many buyers in the subcontinent begin their sourcing journey looking for sodium sulphide manufacturers in Gujarat. Sodium sulphide (Na₂S) is a distinct product used in leather dehairing, mining flotation, and sulfur dyeing. Gujarat’s sodium sulphide producers often obtain sodium sulphate as a byproduct from the Mannheim process or from neutralizing caustic soda with sulfuric acid. Consequently, some of these sodium sulphide manufacturers in Gujarat also sell sodium sulphate as a co-product. This creates an interesting dynamic for textile dyeing buyers: while sulfate supply is locally available, its quality can be variable—often containing residual sulfide traces or heavy metals that are detrimental to dye shades.
From a procurement standpoint, the Gujarat connection is important because many Indian textile mills in Ahmedabad, Surat, and Bhilwara initially search for sodium sulphide manufacturers in Gujarat hoping to find a nearby, integrated supplier for all sodium chemicals. However, when the requirement is specifically high-purity anhydrous sodium sulphate for dyeing, the search should narrow to dedicated sulphate producers. Chinese suppliers like Hailei Chemical have carved a niche by supplying consistent 99% pure material, free from sulfide contamination, to Indian importers who then distribute it to textile hubs. So, while “sodium sulphide manufacturers in Gujarat” remains a relevant search term in the broader sodium chemical landscape, the smart buyer of textile-grade sodium sulphate compares both local byproduct offerings and refined imports to secure the best value without compromising on dyeing quality.
Although the textile application is our central theme, the versatility of sodium sulphate means that many other industrial buyers benefit from understanding its functions. In detergent powder manufacturing, sodium sulphate serves as an inert filler, providing bulk and improving powder flow at up to 30% of the formula—our product’s 99% purity ensures no impurities affect surfactant performance. For glass manufacturing, sodium sulphate acts as a fining agent, helping to remove bubbles from molten glass; the granulated form reduces dust during batching. In kraft paper pulping, sulphate is a makeup chemical in the recovery cycle, and anhydrous sodium sulphate replenishes the sulphur losses. As a chemical feedstock, it is a precursor for sodium silicate and other derivatives. This broad demand base means that reliable exporters like Hailei Chemical maintain large inventories, buffering textile buyers from seasonal shortages.
When shortlisting sodium sulphate suppliers—whether based in China, India, or elsewhere—consider these criteria to avoid costly purchasing mistakes:
By systematically benchmarking potential suppliers against this checklist, you will minimize the risk of receiving off-spec material that could shut down a dyehouse line.
Sustainability has become a key differentiator in chemical procurement. Sodium sulphate itself is non-toxic, non-flammable, and environmentally benign once discharged—it is even approved as a food additive (E514). However, the source of sodium sulphate can impact the carbon footprint. Natural sodium sulphate extracted from lakes (e.g., in China’s Qinghai region) has a lower energy footprint than synthetic processes. Weifang Hailei Fine Chemical Co., Ltd. sources from energy-efficient production lines and continuously works on reducing emissions. For textile brands under pressure to meet ESG targets, sourcing sulfate from a transparent exporter can contribute to scope 3 emission reductions. When engaging with sodium sulphide manufacturers in Gujarat or other regional players, inquire about their byproduct sourcing and whether they recycle waste sulphur—this due diligence aligns with the growing demand for green chemistry in the textile supply chain.
Let us address a few persistent myths that can mislead procurement decisions:
The simple salt that sets dye in fabric—sodium sulphate—is a cornerstone of textile processing that deserves careful sourcing attention. From understanding its physical properties to comparing the price of sodium sulphate per kg and navigating the regional supply dynamics involving sodium sulphide manufacturers in Gujarat, informed buyers gain a competitive edge. Weifang Hailei Fine Chemical Co., Ltd. stands ready to meet your requirements with 99% pure anhydrous sodium sulphate, backed by consistent quality, flexible logistics, and deep technical expertise. Whether you operate a cotton dyehouse in Tirupur, a denim mill in Bangladesh, or a home textile factory in Pakistan, we deliver the reliability you need. Visit our sodium sulphate product page to review full specifications, and when you are ready to start a partnership, request a competitive quote today. Let’s transform your dyeing process with the right salt—every batch, every color.
If you’ve ever wondered why sodium lauryl sulphate used in toothpaste, you’re not alone. This surfactant is the primary reason your toothpaste foams, lifting debris and ensuring a thorough clean. But here’s the catch – sodium lauryl sulphate (SLS) is often confused with sodium sulphate (Na₂SO₄), a completely different industrial workhorse. While SLS creates bubbles in personal care, anhydrous sodium sulphate is the invisible backbone of detergent powders, flat glass, and kraft paper. In this deep dive, we’ll clarify that foaming question, then pivot to what genuinely matters for your procurement: the physical properties, applications, and strategic sourcing of high-purity sodium sulphate.
Sodium lauryl sulphate is an anionic surfactant derived from lauryl alcohol. The query why sodium lauryl sulphate used in toothpaste has a straightforward answer: it lowers surface tension, creating a rich lather that helps disperse toothpaste across teeth and gums. This mechanical action aids plaque removal and gives users that “clean mouth” sensation. Cosmetic formulators carefully control SLS concentration (typically 1–2%) to balance efficacy with low irritation. However, industrial buyers purchasing bulk chemicals need to note that SLS and sodium sulphate are not interchangeable. Confusing the two can lead to costly formulation errors.
While SLS is a surfactant, sodium sulphate serves entirely different functions in industrial processes. It’s a filler, a flux, a levelling agent, and a pulping chemical. Let’s break down the fundamentals.
Many procurement teams encounter both names on tender documents and search for “sodium sulphate” but land on SLS-related content. Here’s a quick comparison:
If you’re sourcing sodium sulphate, specifying “anhydrous, 99% min” avoids any confusion.
Understanding the physical properties of sodium sulphate is essential when designing detergent powders, glass batches, or dyeing recipes. Anhydrous sodium sulphate (Glauber’s salt in hydrated form) exhibits the following typical specifications:
The unique solubility profile – where dissolution is exothermic up to 32.4°C, then endothermic – influences detergent slurry preparation and helps control drying rates. In glass manufacturing, the high melting point and low cost make it an ideal fining agent and source of Na₂O.
Around 80% of global sodium sulphate output goes into laundry detergent powders. Here, anhydrous sodium sulphate acts as an inert filler, bulking the formula while promoting free-flowing properties and preventing caking. It also aids in conveying the detergent slurry during spray drying. With purity of 99%, Hailei Chemical’s sodium sulphate ensures no adverse interactions with surfactants like linear alkylbenzene sulfonate (LAS). Explore our detergent-grade sodium sulphate for formulations that demand consistency.
Flat glass and container glass manufacturers add sodium sulphate as a fining agent and source of sodium oxide. At high temperatures, it releases SO₂ and SO₃, which help remove bubbles from the melt. Its cost advantage over soda ash per unit of Na₂O makes it a strategic raw material for float glass lines. Typical dosage: 2–5 kg per tonne of batch.
In textile processing, sodium sulphate promotes even dye uptake on cotton and other cellulosic fibres. Reactive dye systems rely on salt to drive dye exhaustion; sodium sulphate’s mild, neutral electrolyte behaviour gives dyers precise control without aggressive chemical reactions. This improves colour yield and reduces reworks.
In the sulphate (kraft) pulping process, sodium sulphate is added to the recovery boiler to make up for chemical losses. It is reduced to sodium sulphide, a key active pulping agent. Consistent particle size and high purity prevent unwanted impurities in the green liquor cycle. Our technical grade sodium sulphate is engineered for reliable recovery boiler performance.
While our core focus is sodium sulphate, we often field the parallel query how to use sodium lauryl sulphate. For toothpaste formulators, SLS is pre-dissolved or dry-blended at 0.5–2.0% of the formula. It requires careful handling to avoid dust inhalation. The key takeaway for industrial buyers: SLS is a surfactant that creates foam, whereas sodium sulphate is a non-foaming filler and processing aid. If your specification calls for a bulking agent or flux, sodium sulphate is the correct material.
A common point of confusion is the distinction between sodium sulphate vs sodium sulphite. Both are sodium salts with similar spellings, but chemically and functionally they are distinct:
Mistaking one for the other can ruin a batch. Ordering sodium sulphate when you need an oxygen scavenger will not provide the required reduction potential. Likewise, deploying sodium sulphite as a glass flux introduces unwanted reducing conditions. Always verify the CAS number: Sodium sulphate is 7757-82-6; sodium sulphite is 7757-83-7. At Hailei Chemical, we provide clear product data sheets to eliminate such risks.
India has emerged as a significant production hub for natural and by-product sodium sulphate. Many buyers search for a sodium sulphate manufacturer in india to leverage cost advantages, but supply chain resilience demands evaluating multiple origins. Hailei Fine Chemical, based in China’s Shandong province, offers a reliable alternative with consistent 99% purity, competitive logistics via Qingdao port, and a structured quality management system. Our anhydrous sodium sulphate is produced from both natural brine and chemical by-product streams, ensuring steady availability even when Indian production faces seasonal monsoons or logistical bottlenecks.
When selecting a long-term partner, consider:
We work with major detergent, glass, textile, and pulp brands across 30+ countries, with technical support that helps you optimize sodium sulphate usage in your specific process.
Years of field experience have shown that even seasoned plants can overlook some basics:
We bridge the knowledge gap that leads to questions like why sodium lauryl sulphate used in toothpaste while delivering the industrial-grade sodium sulphate your process demands. Our technical team provides free formulation advice, accelerated sample dispatch, and logistics support from factory to your warehouse.
Whether you’re formulating a new detergent brand, optimizing a float glass line, or confronting inconsistent dye uptake, the right pure sodium sulphate makes a measurable difference. Request a quote today for sodium sulphate tailored to your specifications, or visit our product page to download the latest COA and MSDS.
For detergent manufacturers, the characteristics of sodium sulphate are not merely technical curiosities—they are make-or-break factors that dictate product quality, process efficiency, and total cost per tonne of finished powder. Whether you are operating a spray-drying tower in Nigeria, a dry-blending plant in Southeast Asia, or a liquid-to-powder detergent facility in Europe, the physical and chemical properties of the anhydrous sodium sulphate filler you choose will reverberate through every stage of production, from raw material handling to consumer satisfaction. At Hailei Chemical, we supply industrial-grade sodium sulphate that meets exacting specifications, enabling detergent formulators to achieve consistent density, flowability, and stability. In this comprehensive guide, we examine the sodium sulphate properties that matter most, how bulk density influences landed costs, why the price of sodium sulphate in Nigeria reflects global logistics dynamics, and how sodium feredetate compares to ferrous sulphate in the broader formulation context.
Sodium sulphate (Na₂SO₄) has been a cornerstone of the detergent industry for decades. Unlike active surfactants that perform the primary cleaning work, sodium sulphate serves as a functional filler and processing aid. Its inclusion can reach 20–50% of the total formulation by weight in many laundry powders. The reasons are compelling: it reduces the overall cost of the detergent base without compromising performance, it adjusts the bulk density to meet desired scoop-feel and packaging standards, and it prevents caking by absorbing residual moisture. However, these benefits are only realized when the sodium sulphate properties align with the specific manufacturing process and final product design. Subpar material with inconsistent characteristics of sodium sulphate can lead to segregation in the blender, dust generation, uneven dissolution, and even negative interactions with other ingredients such as enzymes or optical brighteners. Therefore, smart procurement begins with a granular understanding of what defines high-quality anhydrous sodium sulphate.
The characteristics of sodium sulphate can be divided into physical and chemical domains. Both are equally critical. When procurement managers and chemical engineers evaluate a supplier’s material, they typically examine the following properties in detail:
Particle size directly influences flowability, mixing homogeneity, and dust formation. In spray-dried detergent powders, the sodium sulphate filler typically has a mean particle size in the range of 100–300 µm, closely matching the size of the base detergent granules to prevent segregation. For dry-blended formulations, a slightly finer grade (50–150 µm) may be preferred to ensure even distribution among other fine ingredients. A narrow particle size distribution (PSD) is a hallmark of a premium product. If the PSD is too broad, smaller particles can migrate to the bottom of the blender during transport, causing inconsistent bulk density and ultimately variable dosing in the final package. Hailei Chemical’s anhydrous sodium sulphate is sieved and classified to tight specifications, minimizing fines and oversized particles.
Sodium sulphate bulk density is arguably the most influential physical characteristic for detergent manufacturing. Bulk density, expressed in g/cm³ or kg/m³, directly affects the weight-to-volume ratio of the powdered detergent. For a typical light-duty detergent, the target bulk density might be 0.3–0.5 g/cm³, which translates to 300–500 kg/m³, while compact or “heavy” detergents aim for 0.6–0.9 g/cm³. Anhydrous sodium sulphate as a filler can have a bulk density ranging from 500 to 800 kg/m³ in its loose pour state, but this can be manipulated by densification techniques and formulation choices. When sourcing, buyers must specify whether they require light or dense sodium sulphate. A mismatch can derail the entire filling line—cartons designed for a volume of 1 kg of powder may appear half-empty if the density is too high, or overflow if too low. Moreover, bulk density significantly impacts shipping costs: a higher bulk density material means more product per container, reducing freight per tonne. We will revisit this in the logistics and pricing discussion.
Industrial-grade sodium sulphate is typically 99% pure (on an anhydrous basis) as per GB/T 6009 or equivalent international standards. The remaining impurities—chlorides, calcium, magnesium, iron, and water-insoluble matter—must be tightly controlled. Even trace levels of iron can catalyse the decomposition of fragrance oils or react with optical brighteners, leading to off-colour spots in the detergent powder or reduced whitening power. Chloride contamination can accelerate corrosion of stainless-steel processing equipment over time. For detergent manufacturers, a purity specification of ≥99.0% Na₂SO₄ with iron ≤0.002% and chloride ≤0.35% is a common baseline. Hailei Chemical supplies anhydrous sodium sulphate 99% purity that meets these parameters consistently, supported by Certificate of Analysis (CoA) for every shipment. Insisting on a detailed CoA is a non-negotiable step in supplier qualification.
The pH of a 5% aqueous solution of sodium sulphate should be neutral (6–8). A strongly acidic or alkaline pH indicates residual acid or base from manufacturing processes, which can corrode equipment and alter the final detergent’s pH, potentially affecting enzyme activity or the stability of bleaching agents like sodium percarbonate. Routine pH checks during incoming material inspection are a quick and reliable quality gate.
Anhydrous sodium sulphate is hygroscopic to a degree, though less so than sodium chloride. However, if exposed to high humidity during storage or transport, it can absorb moisture and form hard lumps. These lumps are difficult to break and can clog hoppers or dosing screws. Proper packaging—typically in moisture-proof 25 kg or 1000 kg bags with inner liners—is essential. Additionally, the material’s tendency to cake correlates with its crystal structure and residual moisture content. Premium suppliers guarantee a moisture content of less than 0.5%.
Beyond its role in determining the physical properties of the final detergent, sodium sulphate bulk density is a master lever in supply chain economics. When a procurement manager in Lagos or Port Harcourt evaluates the price of sodium sulphate in Nigeria, the quoted FOB or CIF price per metric ton is only half the picture. The number of tonnes that can be loaded into a 20-foot or 40-foot container depends on the bulk density of the material as packed. For example, a light sodium sulphate with a packed bulk density of 650 kg/m³ might allow only 18 metric tons in a standard 20-foot container (assuming a typical 28–30 m³ internal volume and stowage efficiency), whereas a denser grade at 850 kg/m³ could fit 24–25 tons. The cost per ton delivered will therefore be significantly lower for the denser product, all other factors being equal. Savvy buyers in West Africa are increasingly specifying minimum bulk density levels to shave freight costs. At Hailei Chemical, we work with clients to tailor the product’s density to their logistical and formulation needs, whether they require standard light material or densified grades that maximize container utilization without sacrificing flowability.
A common point of confusion among new formulators and even some procurement specialists is the distinction between sodium sulphate fillers and other sodium or iron-based additives. The keyword sodium feredetate vs ferrous sulphate often appears in technical queries, so clarity is vital. Sodium feredetate (sodium iron EDTA) is a chelating agent and bioavailable iron source, not a filler. It is sometimes included in detergent formulations as a stain-removal enhancer because it can sequester iron and manganese from hard water, preventing them from interfering with detergent action. Ferrous sulphate, on the other hand, is a reducing agent and a source of iron ions; it finds limited use in certain industrial cleaning applications or as a flocculant but is rarely used in household laundry detergents due to potential staining. Neither sodium feredetate nor ferrous sulphate can substitute for sodium sulphate as a bulk filler because they do not provide the same inert, neutral-pH, high-bulk characteristics. In fact, using them in high concentrations would be prohibitively expensive and chemically reactive. Thus, the comparison “sodium feredetate vs ferrous sulphate” is really about niche functionality, while sodium sulphate remains the undisputed choice for volume and cost optimization. Understanding the characteristics of sodium sulphate helps formulators avoid misguided substitution attempts that could destabilize the entire blend.
The price of sodium sulphate in Nigeria is a key concern for the country’s growing detergent industry. Nigeria imports the majority of its industrial chemicals, and sodium sulphate is no exception. The final landed cost per ton is influenced by several variables: the FOB price from the Chinese or European supplier, ocean freight rates (which have been volatile in recent years), insurance, customs duties (often 5–10% for chemical raw materials), and local port handling charges. Additionally, the devaluation of the Nigerian Naira against the US Dollar directly impacts affordability. A typical CIF Lagos price for anhydrous sodium sulphate 99% might range between $200 and $350 per metric ton, depending on the contract size, packaging, and specific quality parameters. But as discussed earlier, effective price per unit volume of finished product also depends on bulk density. Buyers who negotiate on chemical specifications alone may pay less per ton but more per cubic meter of detergent produced if they inadvertently purchase low-density material. Forward-thinking procurement managers in Nigeria are therefore integrating both purity and bulk density into their supplier scorecards. At Hailei Chemical, we help Nigerian detergent manufacturers optimize total delivered cost by offering consistent, high-bulk-density grades and flexible shipping options including LCL and full-container loads to Apapa and Tin Can Island ports. We also provide all necessary documentation—MSDS, CoA, and certificate of origin—to facilitate smooth customs clearance.
Securing a reliable source of sodium sulphate requires more than comparing price lists. A robust supplier evaluation process should include these steps:
Hailei Chemical excels on all these fronts. Our sodium sulphate is sourced from a modern production base in Weifang, Shandong, leveraging abundant local mineral resources and energy-efficient manufacturing. Every batch is analysed for sodium sulphate properties including bulk density, purity, iron content, chloride content, and pH, with data logged for full traceability. We understand that for a detergent plant running 24/7, a single container of off-spec filler can result in hours of costly downtime.
Even with premium raw material, how you handle sodium sulphate on-site can influence the final characteristics of your detergent. Follow these best practices:
By mastering the characteristics of sodium sulphate and managing them throughout your supply chain, you transform a simple commodity into a competitive advantage.
As a leading Chinese exporter of fine chemicals, Hailei Chemical is dedicated to supporting detergent manufacturers worldwide with reliable, high-quality raw materials. Our anhydrous sodium sulphate is consistently produced to meet the demanding physical and chemical criteria outlined in this article. We offer custom packaging, multiple grain sizes, and the logistical expertise to serve markets from Africa to Latin America and beyond. Our technical team understands the intricate relationship between sodium sulphate properties and detergent performance, and we are always ready to assist with formulation challenges or supply chain optimization.
Ready to secure a stable, cost-effective supply of sodium sulphate that meets your precise bulk density and purity requirements? Request a quotation today and let our specialists design a supply programme tailored to your detergent manufacturing operation. For more detailed product specifications, visit our sodium sulphate product page.