If you are a procurement manager in an Indian detergent, glass, or textile factory, you may have searched for “what is sodium sulphate in hindi” to better understand this essential industrial chemical. Sodium sulphate (Na₂SO₄), known as सोडियम सल्फेट in Hindi, is an inorganic compound that appears as a white crystalline powder. At Weifang Hailei Fine Chemical Co., Ltd., we supply high-purity anhydrous sodium sulphate (99% min) to major Indian importers who rely on it for cost-effective filler, flux, and dyeing auxiliary applications. This guide explains everything an Indian industrial buyer needs to know—from basic definitions in Hindi and English to technical characteristics, drying mechanisms, bulk pricing factors, and quality specifications—so you can make informed sourcing decisions.
When you ask what is sodium sulphate in hindi, the direct answer is: सोडियम सल्फेट एक सफेद क्रिस्टलीय अकार्बनिक लवण है जिसका रासायनिक सूत्र Na₂SO₄ होता है। यह मुख्यतः डिटर्जेंट पाउडर, कांच निर्माण, वस्त्र उद्योग और कागज उद्योग में भराव, गलनांक कम करने वाले पदार्थ और सहायक रसायन के रूप में उपयोग होता है। In short, sodium sulphate is a versatile, low-cost industrial salt that does not contain water of crystallization in its anhydrous form, making it ideal for moisture-sensitive processes.
Indian industries often source anhydrous sodium sulphate from China, the world’s largest producer, to meet their bulk requirements at competitive prices. At Hailei Chemical, we offer consistent 99% purity with reliable shipping to Nhava Sheva, Mundra, Chennai, and other major Indian ports.
Understanding regional terminology helps avoid confusion during procurement. Sodium sulphate is also referred to as:
The characteristics of sodium sulphate determine its suitability for diverse industrial applications. As a procurement specialist, you need to evaluate these parameters when comparing suppliers.
These sodium sulphate properties ensure that it acts as an inert filler without affecting the chemical stability of end products. Our product meets the rigorous GB/T 6009-2014 standard, which aligns with international ASTM specifications.
Anhydrous sodium sulphate is chemically stable under normal storage conditions. It is non-flammable, non-explosive, and compatible with most detergent ingredients like linear alkylbenzene sulfonic acid (LABSA), sodium silicate, and soda ash. However, it should be kept away from strong acids and reducing agents. For Indian factories experiencing high humidity during monsoons, storage in dry, covered warehouses is recommended to prevent caking, although the anhydrous grade resists hydration better than Glauber’s salt.
Many buyers in the chemical and pharmaceutical sectors wonder how does sodium sulfate dry a solution. The answer lies in its high affinity for water. Anhydrous sodium sulfate (Na₂SO₄) has a strong tendency to absorb water molecules and form the decahydrate (Na₂SO₄·10H₂O). When added to a wet organic solution, it acts as a desiccant by:
This drying mechanism is highly effective for solvents like ether, dichloromethane, and toluene because sodium sulfate is chemically inert and does not react with most organic compounds. Its high capacity (it can absorb up to 1.27 grams of water per gram of anhydrous sulfate) and simple removal make it a preferred choice in laboratories and in the production of APIs (Active Pharmaceutical Ingredients). For Indian chemical manufacturers looking to source a bulk desiccant, our 99% anhydrous sodium sulphate offers consistent performance with low iron content (≤20 ppm) to avoid discoloration.
Indian demand for sodium sulphate has been growing steadily at 4-5% CAGR, driven by the detergent, glass, and textile sectors. Imported Chinese material often provides better cost-value because of scale and purity.
Approximately 55-60% of sodium sulphate imported into India is used as an inert filler in laundry detergent powders. Why? It bulks up the product, improves flow characteristics, and helps standardize dosing without affecting the active surfactant performance. Our anhydrous grade at 99% purity blends seamlessly with spray-dried detergent formulations. Many Indian FMCG buyers choose Chinese sodium sulphate because local production (mostly by-product from viscose rayon plants) sometimes contains organic impurities that can cause odor or discoloration. Hailei Chemical’s sodium sulphate is produced via natural brine evaporation or Mannheim process, guaranteeing a clean, white filler that passes stringent sensory tests.
In glass furnaces, sodium sulphate acts as a fining agent and prevents silica scum formation. It lowers the melting temperature of silica sand, thereby reducing energy consumption. Indian container glass and float glass plants prefer high-purity anhydrous sulphate with low iron (Fe ≤0.002%) to maintain clear, colorless glass. Our shipment to a Gujarat-based glass maker delivered a batch with Fe content of 15 ppm, far exceeding the standard requirement.
In reactive and direct dyeing of cotton and viscose, sodium sulphate increases dye exhaustion by lowering the solubility of the dye, pushing the equilibrium toward the fiber. Indian textile mills in Tirupur, Ludhiana, and Surat consume significant volumes. The consistent particle size (typically 200–325 mesh) ensures rapid dissolution in dye baths without undissolved residues that could spot the fabric.
In the sulphate (kraft) pulping process, sodium sulphate is added to the recovery furnace to makeup for sodium and sulfur losses. While Indian paper mills often use domestic salt cake, large integrated mills importing bleached hardwood pulp sometimes prefer Chinese anhydrous grade for its purity and low chlorides (Cl ≤0.1%) that minimize corrosion of boiler tubes.
A frequent concern for Indian buyers is the sodium sulphate bulk price. Procuring from China involves multiple cost components beyond the FOB rate.
For a 100 MT monthly order, a well-negotiated CIF Nhava Sheva price should be around $115–$145/MT delivered duty paid. We at Hailei Chemical provide transparent quotes and can arrange door-to-door cost estimation to help you project your exact manufacturing cost per ton of detergent.
Never compromise on purity for a few dollars per ton. Low-grade sodium sulphate (e.g., 96%) often contains sodium chloride, sodium carbonate, or insoluble matter that can lead to corrosion in glass furnaces, inconsistent detergent density, or fabric staining in dyeing. Our standard specification ensures:
Sodium sulphate is a non-hazardous chemical (UN number not applicable), yet proper handling ensures quality retention. When receiving containers at Indian ports, inspect for bag tears and moisture ingress, especially during monsoon. Store in a dry, ventilated warehouse at temperatures below 30°C to prevent hydration. Our material is loaded in sealed containers with desiccants; we also offer palletized wrapping and shrink film for cargo protection.
Typical shipment size: 25–27 metric tons in a 20-foot container, with pre-shipment inspection certificates (SGS or Bureau Veritas) issued per consignment to give you financial confidence. Our shipment records show less than 0.5% loss in transit.
For over 15 years, Weifang Hailei Fine Chemical has been a trusted exporter to the Indian subcontinent. We understand that Indian buyers demand not just competitive pricing but also:
No. At typical inclusion rates of 15-40% in detergent powder, it functions purely as a filler and flow aid without interfering with surfactant performance, provided purity is high.
Yes, we offer 25 kg, 50 kg, and 1,000 kg jumbo bags. Custom packaging with private labeling is also possible.
From booking confirmation, production takes 7–10 days, and ocean transit to Chennai is about 18–22 days, totaling approximately 4–5 weeks.
No. Glauber’s salt is Na₂SO₄·10H₂O, containing about 44% water by weight. For industrial applications requiring dry filler, always specify anhydrous grade. We supply only anhydrous sodium sulphate.
If you are seeking a reliable, China-based source for anhydrous sodium sulphate with proven Indian market track record, contact us now. Whether your need is for detergent filler, glass fining, or textile dyeing auxiliary, our team will provide a tailored quotation reflecting current shipping routes and your desired quantity. Request your sodium sulphate bulk price and product specification sheet here and join hundreds of Indian industries that trust Hailei Chemical for their raw material supply.
When procurement teams ask, “What is sulfate used for?” they are often looking for a precise, application-driven answer that connects directly to sodium sulphate—a workhorse chemical across multiple heavy industries. Whether you formulate detergents, melt glass, process pulp, or dye textiles, sodium sulphate (Na₂SO₄) is likely a critical input where purity, particle characteristics, and consistent quality directly impact your bottom line. In this comprehensive guide, we cut through generic descriptions and deliver the technical specifications, application-level use cases, and supplier evaluation criteria that industrial buyers need to make confident purchasing decisions.
Weifang Hailei Fine Chemical Co., Ltd. has been a trusted exporter of premium industrial sodium sulphate for decades. We understand that answering “what is sulfate used for” must go hand in hand with the exact specification of sodium sulphate required for your process. This article will also clarify common confusions—from what is sodium sulphite (a completely different chemical) to the sodium sulfate vs sodium sulphate spelling debate, and even the odd search term “what is sodium sulfate potas”—so you can avoid costly procurement mistakes.
Sodium sulphate is an inorganic salt that delivers functional value, not just bulk. Below are its major industrial applications, each demanding specific grades and physical forms. Understanding these end-uses will help you pinpoint the exact product specification your facility needs.
In laundry detergent powders, sodium sulphate serves as an economical filler that helps achieve the desired bulk density and flowability while carrying the active surfactants. It is chemically inert, non-caking, and does not interfere with the cleaning process. A high-purity (≥99% Na₂SO₄), fine, free-flowing powder is the industry standard. Buyers typically look for a particle size <45 µm (200 mesh) and low iron content (<30 ppm) to avoid discolouration in white powders. Our industrial-grade sodium sulphate meets these strict detergent-sector requirements, ensuring consistent tap density and excellent whiteness.
In the glass industry, sodium sulphate acts as a fining agent and flux. It introduces Na₂O into the glass batch while releasing sulphur trioxide (SO₃) gases at high temperatures, which helps remove bubbles and homogenise the melt. The key parameter here is a low moisture content (<0.1%) to prevent seed formation and strict control of alkalinity. Glassmakers often prefer a medium-coarse granular form to reduce dusting during batching. Importers seeking to reduce energy consumption in the furnace can rely on our consistent sulphate grades, which provide repeatable melting behaviour.
Textile mills use sodium sulphate as a levelling agent in reactive dyeing of cotton and cellulosics. It promotes even dye uptake by controlling the rate of exhaustion. The critical specification here is a very low iron and heavy metal profile, as even trace contaminants can alter dye shades or cause spotting. A powder with high solubility and consistent ionic strength ensures batch-to-batch shade reproducibility. Many dyehouses specify a purity of 99% and a maximum 0.02% insolubles to avoid filter blockages.
In the kraft pulping process, sodium sulphate is added to the recovery boiler to make up for chemical losses. It is converted to sodium sulphide in the smelt, which is essential for the cooking liquor. Pulp producers require a low-chloride, free-flowing granular product that can be easily handled in bulk systems. A purity of 98.5–99% with controlled moisture ensures optimal performance in the lime kiln and causticizing loop. We supply sulphate grades that dissolve quickly and minimise unwanted side reactions.
Sodium sulphate is also a precursor for products such as sodium sulphide, barium sulphate (blanc fixe), and even as a raw material in the production of certain silica gels and zeolites. In these applications, heavy metal limits and consistent chemical composition are paramount. Our material meets the rigorous input standards required by downstream chemical manufacturers.
Having a clear, detailed specification of sodium sulphate is what separates a smooth-running operation from unexpected downtime and quality complaints. The following parameters are essential to include in your purchase order or tender. We recommend you always request a certificate of analysis (COA) that covers every line item.
Our team at Hailei Chemical can provide technical datasheets and assist you in aligning the specification with your process requirements. Always consult the relevant international standard (e.g., GB/T 6009-2014, ISO 3262) if you need a point of reference.
Buyers often wonder if sodium sulfate vs sodium sulphate represents two different chemicals. The answer is simple: both terms describe exactly the same inorganic salt, Na₂SO₄. “Sulfate” follows the American English spelling, while “sulphate” is the British and Commonwealth variant. In technical documentation, you will see both used interchangeably. When sourcing, don’t let the spelling trip you up; focus instead on the substance’s specifications. At Hailei, our product is labelled as sodium sulphate to reflect international naming conventions, but it fully complies with all “sulfate” grade requirements as well.
The key takeaway: whether your RFQ says “sodium sulfate anhydrous” or “anhydrous sodium sulphate,” you are requesting the identical material. This clarity can streamline supplier conversations and prevent misunderstandings in cross-border trade.
Newcomers to chemical procurement sometimes confuse sodium sulphate with sodium sulphite—after all, only a single letter differs. But what is sodium sulphite? It is Na₂SO₃, a reducing agent used in water treatment, photographic fixers, and as an oxygen scavenger. It is chemically distinct and not interchangeable with sodium sulphate. Accidentally ordering sodium sulphite for a detergent filler application would be a costly mistake; its reducing properties would react with oxidising bleach components, and its higher price makes it economically unsuitable.
Make sure your purchase order specifies both the chemical name and the CAS number to avoid ambiguity. Sodium sulphate anhydrous carries CAS 7757-82-6, while sodium sulphite anhydrous is CAS 7757-83-7. A reputable supplier will never ship one in place of the other, but it’s best practice to double-check the COA and packaging labels upon receipt.
The search query “what is sodium sulfate potas” likely arises from buyers confusing sodium sulphate with potassium sulphate—occasionally referred to as sulfate of potash. Potash is a generic term for potassium compounds, and sulfate of potash (SOP) is K₂SO₄, a premium potassium fertiliser. Sodium sulphate, on the other hand, contains no potassium and is not used as a direct fertiliser material. Some manufacturers who need a sodium source for industrial processes may mistakenly search using “potas” when they meant “sodium sulfate powder.” If you are procuring for glass, detergent, or pulp applications, ensure you are ordering Na₂SO₄ and not K₂SO₄. Supplier catalogs should clearly separate the two.
If your operation actually requires potassium (e.g., for specialty glass or high-K fertiliser blends), you’ll need a completely different supply chain. Our expertise is in sodium chemistry; we can confidently supply sodium sulphate and offer technical guidance to help you clarify which sulphate form your process truly demands.
Industrial sodium sulphate is a relatively simple chemical, but sourcing it poorly can introduce hidden costs. Here are our top recommendations for buyers:
Consistency in particle size and purity directly affects your production yields. Ask for historical shipment data, batch-to-batch COA records, and third-party audit reports. We maintain a stable source of semi-finished anhydrous sodium sulphate from domestic brine operations, ensuring uniform quality even across large orders.
Laboratory analysis by your own quality team is a must. We encourage clients to request a 1 kg sample (freight prepaid) so they can test dissolution rate, bulk density, and compatibility with their existing blend.
Moisture is the enemy. Standard packaging is 25 kg moisture-resistant PE-lined kraft bags or 1,000 kg FIBC (big bag) with a lamination liner. For sea freight, ensure containers are lined with a moisture barrier and desiccants if the destination is humid. We offer custom packaging and palletisation to meet your warehousing and handling requirements.
Always obtain a full SDS, COA, and a certificate of origin. If your product is destined for the European REACH or other regulated markets, confirm that the supplier can provide the necessary pre-registration and testing documentation. At Hailei Chemical, our export team handles all paperwork, including fumigation certificates and GSP Form A, to ensure smooth customs clearance.
What is sulfate used for in detergent manufacturing?
It is the most common filler, adding bulk and improving pouring properties without affecting cleaning performance. A 99% purity anhydrous grade is standard.
Can sodium sulphate replace sodium carbonate in glass?
No, they have different roles. Sodium sulphate provides Na₂O and acts as a refining agent, while soda ash (sodium carbonate) is the primary flux. They work together in the batch.
Is sodium sulphate hazardous?
Under normal handling, it is a non-toxic, non-flammable salt. Standard industrial PPE (dust mask, gloves) is recommended to avoid inhalation of fine particles. The SDS classifies it as not dangerous for transport.
What’s the typical shelf life?
When stored in a dry, ventilated area, anhydrous sodium sulphate remains stable for at least 24 months. Avoid exposure to moisture to prevent caking.
Do you provide material in both powder and granular form?
Yes, our sodium sulphate product page lists available particle size ranges. Custom sieving can be arranged for bulk contracts.
When your procurement team searches for what is sulfate used for, you need more than a generic answer—you need a partner who can deliver the exact sodium sulphate specification that matches your industrial process. With decades of export experience, Weifang Hailei Fine Chemical Co., Ltd. provides 99% purity anhydrous sodium sulphate, robust quality control, and flexible logistics support for detergent, glass, textile, and pulp buyers worldwide.
Take the next step: review our complete sodium sulphate specifications and request a quote today. Our technical sales team will help you select the right grade, arrange samples, and provide a competitive landed cost tailored to your port.
For procurement managers and chemical engineers, achieving a favourable sodium sulphate wholesale price is a critical piece of the supply chain puzzle. Sodium sulphate, also known by its common name Glauber’s salt in its hydrated form, serves as an essential filler in detergent powders, a fluxing agent in glass manufacturing, a dyeing auxiliary in textiles, and a key additive in kraft paper pulping. In its anhydrous form (Na2SO4) with a purity of 99%, this versatile mineral delivers cost-efficiency and performance across multiple industries. But price isn’t just a number on a purchase order — it reflects purity, particle size, transportation logistics, and the reliability of the supplier. In this comprehensive guide, we’ll examine every dimension of sodium sulphate pricing, from the chemical properties that influence cost to the global market dynamics that shape your buying strategy.
Many buyers researching what is sodium sulphate common name will encounter “Glauber’s salt” for the decahydrate (Na2SO4·10H2O) and “salt cake” or simply “sodium sulfate” in industrial circles. For industrial procurement, however, the anhydrous form — sodium sulphate anhydrous — is the product of choice. This white crystalline powder is highly stable, has a neutral pH, and is completely free of the water of crystallisation that would otherwise dilute active content and add unnecessary freight weight. In its natural mineral state, anhydrous sodium sulphate appears as thenardite, while the hydrated form is mirabilite. But for buyers, the key specification is the anhydrous Na2SO4 content, which directly impacts formulation economics in detergents, glass batch melting, and pulp cooking.
The sodium sulphate wholesale price influences the final cost of goods in multiple high-volume industries. Detergent manufacturers rely on sodium sulphate as an inert filler that can constitute 20–40% of powder mass; even a $10 per metric ton fluctuation can shift a plant’s monthly expenditure by thousands of dollars. Glass producers use it as a fining agent and to supply sulphur trioxide for oxidation control; a consistent, competitive price helps stabilise furnace batch costs. Textile mills and kraft pulp mills equally depend on pricing visibility to maintain long-term contracts. Understanding the underlying pricing drivers transforms price from a commodity variable into a manageable line item.
The most direct cost driver is chemical purity. Standard technical grades may range from 92% to 99% Na2SO4, with higher purity commanding a premium. For demanding applications — optical glass, high-brightness detergent powders — a purity of 99% min is essential. Our sodium sulphate anhydrous 99% product eliminates the risk of discolouration or impurity-related defects, justifying its value in sensitive formulations. Traces of chlorides, iron, or insoluble matter can render a low-purity batch useless, making purity consistency a key price factor.
Anhydrous sodium sulphate is typically supplied as a fine powder (100–200 mesh) or a granular form. Fine powders dissolve faster but may require anti-caking agents and specialised pneumatic handling, while granular grades reduce dust and improve flowability but may cost slightly more due to additional processing. Buyers should match the particle size to their process: detergent spray drying often prefers fine powder for uniform blending, while glass batch plants may favour granular for easier conveyor handling. These specifications influence the quoted wholesale price per ton.
Sodium sulphate can be produced synthetically (Mannheim process reaction of salt and sulfuric acid) or recovered from natural brines and mineral deposits. Synthetic production is energy-intensive and closely tied to sulfuric acid and caustic soda markets, creating price volatility. Natural sources in China, India, and Mexico offer more stable supply curves. Hailei Fine Chemical leverages large-scale recovery and reliable supply chains to deliver a competitive sodium sulphate wholesale price without sacrificing quality. Buyers who understand these production pathways can better anticipate market shifts.
The detergent and glass sectors consume the lion’s share of global sodium sulphate, so seasonal demand spikes — pre‑holiday soap production, construction‑driven glass demand — can tighten supply and push up prices. Simultaneously, the availability of synthetic by-product sodium sulphate from rayon and silica pigment plants adds capacity, often at discounted rates for nearby buyers. Tracking these trends helps procurement teams time their bulk purchases advantageously.
Freight represents a substantial component of the delivered price. Sodium sulphate is typically shipped in 25 kg polypropylene bags, 1000–1250 kg supersacks, or in bulk containers. For export, container loads (20–25 metric tons) are common. The choice of packaging, distance to port, container availability, and applicable duties all influence the final wholesale price. Hailei’s export team optimizes packaging and inland logistics to keep landed costs low for overseas clients.
Specifications matter. Our 99% sodium sulphate anhydrous meets the rigorous requirements of:
Each application tolerates different impurity profiles. A buyer who fully defines the required specification can often negotiate a better sodium sulphate wholesale price by avoiding overspecification.
When evaluating a supplier, many technical buyers ask: is sodium sulphate soluble? The answer is yes, but its solubility behaviour is unusual. Anhydrous sodium sulphate dissolves readily in water, with solubility increasing dramatically from 4.76 g/100 mL at 0°C to a maximum of about 49.7 g/100 mL at 32.4°C — only to decrease to 42.5 g/100 mL at 100°C. This solubility curve stems from the transition from decahydrate to anhydrous salt above the transition temperature. For industrial users, this means:
From a pricing perspective, solubility rarely dictates cost directly, but it does influence packaging and storage requirements: moisture pickup in humid conditions can cause caking, so high-purity sodium sulphate must be stored in sealed, moisture‑proof bags — a factor that adds a small but real logistic cost.
The colour of sodium sulphate is one of the first inspection points for incoming material. Pure anhydrous sodium sulphate is a bright white crystalline powder. Any off‑white, grey, or yellowish tint signals contamination — often iron oxides, organic residues, or insufficient purification. For detergent producers, a slight colour cast can transfer to the final powder, compromising consumer acceptance. Glass makers reject iron-tainted sulphate because it can tint the glass green. At Hailei, our 99% grade consistently meets a whiteness index above 92%, ensuring that what you see in the sample bag is exactly the quality you will receive at scale. Incorporating a colour specification into your purchase agreement can be an effective way to safeguard against inferior product while keeping the wholesale price aligned with your quality needs.
Significant volumes of sodium sulphate are produced in China, India, Mexico, and certain European countries. India stands out as a key supplier for domestic and regional markets, with many manufacturers of sodium sulphate in india drawing on natural brine deposits and by‑product streams from the rayon and chemical industries. Indian manufacturers often serve South Asian and Middle Eastern detergent and textile markets, with some capacity for export. However, for buyers seeking consistent large‑scale shipments with rigorous quality control, Chinese exporters like Hailei Fine Chemical offer competitive advantages in production scale, logistics infrastructure, and export documentation. By evaluating both Indian and Chinese sources, procurement managers can benchmark the sodium sulphate wholesale price and choose the partner that best matches their volume, quality, and delivery requirements. Our sodium sulphate product page provides up‑to‑date specifications and typical shipment details to facilitate that comparison.
Experienced buyers know that the quoted price is only the starting point. To achieve the most favourable sodium sulphate wholesale price, consider these negotiation strategies:
Hailei Fine Chemical welcomes long‑term partnerships and is prepared to discuss flexible terms that align with your business cycles.
Beyond the ex‑works price, a buyer’s true cost includes freight, insurance, port charges, and sometimes anti‑caking treatments. Sodium sulphate is hygroscopic, so container loading must protect against moisture ingress — often through liner bags or desiccants. Choosing 25 kg bags versus 1‑ton supersacks affects handling labour and warehouse space at the destination. For large buyers, dedicated bulk shipments using pneumatic tank containers can slash packaging costs and improve unloading speed. Our export team works closely with leading freight forwarders to provide a transparent landed cost estimate, helping you accurately compare offers and control your overall procurement budget.
The sodium sulphate wholesale price is far more than a figure on a quote sheet — it is the sum of purity, particle characteristics, production origin, logistics, and supplier reliability. By understanding what influences cost and how to align specifications with real process needs, procurement professionals can convert a commodity purchase into a strategic advantage. Whether you are blending premium detergent powders, melting high‑clarity glass, or processing kraft pulp, the quality of your sodium sulphate directly impacts your product and your bottom line.
Ready to secure your next shipment at a competitive price? Explore the detailed specifications of our sodium sulphate anhydrous 99% and take advantage of our experience in global chemical supply. Request a quote today, and let our team tailor a solution — from sample evaluation to bulk delivery — that meets your industrial demands.
If you’re asking what is the everyday name for sodium sulphate, you’re in good company. This workhorse inorganic chemical steps quietly through dozens of industries under a handful of aliases, each tied to a specific form, purity, or historical use. Procurement teams, new chemical buyers, and even engineers sometimes stumble over terms like Glauber’s salt and salt cake when what they really need is a consistent, high-purity anhydrous material from a reliable source. In this guide, we’ll decode the everyday names, unpack the essential sodium sulphate formula and properties, explore the genuine sodium sulfate benefits for manufacturers, reveal uses of sodium sulphate in daily life, and straighten out the confusion behind the search term best sodium sulphate free shampoo. By the end, you’ll not only have the vocabulary but also the industrial insight to source exactly what your operation demands. For premium anhydrous sodium sulphate (99% purity) directly from a leading Chinese exporter, visit our sodium sulphate product page.
The everyday name for sodium sulphate depends entirely on who you ask and what form they handle. So, what is the everyday name for sodium sulphate in a procurement context? The most common replies are:
For industrial buyers, the everyday name chosen often reflects the physical form and application. A glass plant manager ordering 25-ton shipments of free-flowing white powder will simply ask for “sodium sulphate anhydrous” or “anhydrous sodium sulphate.” A detergent manufacturer may refer to it as “filler-grade sodium sulphate.” Meanwhile, a supplier’s material safety data sheet will always list sodium sulphate—because precision eliminates costly misunderstandings. At Hailei Chemical, we supply consistent, high-purity sodium sulphate anhydrous that meets the rigorous demands of all these downstream applications, whether you know it as salt cake or simply Na2SO4.
Knowing the sodium sulphate formula and properties helps you specify the right grade. Sodium sulphate has the chemical formula Na2SO4, with a molar mass of 142.04 g/mol (anhydrous). It is an inorganic salt composed of two sodium cations (Na⁺) and one sulfate anion (SO4²⁻). Key physical properties relevant to bulk handling and processing include:
The decahydrate contains roughly 55.9% water by weight, which fundamentally changes shipping economics and handling. For most industrial applications, the anhydrous grade with purity ≥99% is preferred because it delivers more active material per tonne and avoids introducing water into sensitive formulations. Our product at Hailei Chemical conforms to a minimum 99% Na2SO4 content, with low chloride and iron levels, ensuring compatibility with glass tank redox requirements and detergent slurry stability.
The sodium sulfate benefits span multiple unit operations, making it a cost-effective auxiliary across entire supply chains. While often viewed as a simple filler or flux, its functional contributions go deeper:
In spray-dried detergent formulations, anhydrous sodium sulphate acts as an inert, free-flowing filler that improves powder density and reduces caking without interfering with surfactants. It helps control slurry viscosity and accelerates drying tower throughput. The neutral pH and low moisture absorption keep enzyme stability in biological detergents. For laundry powder producers, the benefit is clear: lower cost per kilogram of finished product, with better handling properties.
In flat glass, container glass, and fiberglass batch, sodium sulphate serves as a refining agent. It decomposes at high temperatures, releasing SO2 and SO3 gases that help remove small bubbles (fining) and homogenize the melt. It also acts as a flux, lowering the melting temperature of silica and reducing energy consumption. Glassmakers value a tightly controlled sulphate assay to maintain redox equilibrium—a direct quality advantage when sourcing pure material.
In pulp mills, sodium sulphate is the make-up chemical for the recovery cycle. It is reduced in the recovery boiler to sodium sulfide, which is the active cooking chemical. A consistent particle size and high purity prevent boiler fouling and ensure uniform chemical recovery rates.
As a leveling agent in reactive and direct dyeing, sodium sulphate promotes even dye uptake on cellulosic fibers. It reduces dye aggregation and controls the ionic strength of the dyebath, leading to brighter, more uniform shades. Mills benefit from reduced dye waste and reworks.
For a deeper look at how our product fits these roles, review the specifications on our industrial-grade sodium sulphate page.
While you don’t see it on the label, the uses of sodium sulphate in daily life are woven into countless household and consumer items. The powder inside your washing machine, the glass jar holding your morning coffee, the paper in your printer, and the textile of your clothing likely owe some of their performance or affordability to sodium sulphate.
Specifically:
Thus, even though it’s an invisible industrial ingredient, sodium sulphate silently raises the quality and lowers the cost of everyday life.
An intriguing search query often lands on procurement-oriented websites: best sodium sulphate free shampoo. If you’ve typed that, you’re likely thinking of sulfate-free personal care products that avoid sodium lauryl sulfate (SLS) or sodium laureth sulfate (SLES)—surfactants that can be harsh on scalp and coloured hair. Here’s the critical fact: sodium sulphate (Na2SO4) is not used in shampoos. It has no surfactant properties, does not foam, and would do nothing to clean hair. The confusion arises because “sulfate” in home care ingredient lists almost always refers to alkyl sulfate surfactants, not the inorganic salt sodium sulphate.
So, a shampoo cannot be “sodium sulphate free” because sodium sulphate was never an ingredient. What consumers actually seek is SLS-free or SLES-free shampoos. The good news is that our high-purity sodium sulphate stays firmly in its industrial lane—it is an essential raw material for the detergent powder factory, not the personal care aisle. If you’re a formulator considering new detergent compositions, you can confidently specify anhydrous sodium sulphate without linking it to the well-intentioned but misplaced consumer search. Just remember: industrial sodium sulphate is not the foe your scalp is looking to avoid.
For procurement managers, knowing the everyday name is only the first step. Securing a reliable supply of anhydrous sodium sulphate demands attention to purity, packaging, and logistics.
Whether you call it Glauber’s salt for a niche application or simply need consistent bulk sodium sulphate anhydrous, we have the capacity and technical expertise to support your production lines. To request a quotation, visit our inquiry page. For product specifications in detail, explore the sodium sulphate anhydrous product section.
By now, you can confidently answer “what is the everyday name for sodium sulphate” and understand how to leverage the sodium sulfate benefits that matter most to your operation. Backed by more than a decade of fine chemical exporting, Hailei Chemical is ready to be your trusted supply chain partner.
If you’ve ever scanned an oral care label, you’ve probably asked, why sodium lauryl sulphate used in toothpaste. The short answer: sodium lauryl sulphate (SLS) is a highly effective anionic surfactant that creates foam, removes debris, and disperses active ingredients. In toothpaste, it delivers that familiar frothing sensation while helping to loosen plaque and food particles during brushing. Because it’s derived from coconut or palm kernel oil and is cost-efficient, SLS remains the foam-boosting workhorse for many personal care brands.
However, as a procurement professional or chemical engineer, your focus is rarely on toothpaste. Your concern is high-purity sodium sulphate (Na2SO4) for industrial-scale manufacturing. That’s where confusion often begins. Many buyers see “sodium sulphate” and “sodium lauryl sulphate” used interchangeably in casual search, yet they are entirely different chemicals with distinct properties, applications, and safety profiles. This article clears up that confusion, explores the physical properties of sodium sulphate, compares it with sodium sulphite, guides you on how to use it in industrial settings, and helps you evaluate sodium sulphate manufacturer in India versus the global supply landscape—while arming you with the deep expertise that Hailei Chemical delivers to B2B buyers every day.
The similarity in names frequently leads to procurement mix-ups, but the two compounds serve fundamentally different roles. Sodium lauryl sulphate (CH3(CH2)11OSO3Na) is an organic surfactant with a long hydrocarbon tail; it’s designed to lower surface tension in aqueous solutions. Sodium sulphate (Na2SO4) is an inorganic salt, a simple combination of sodium and sulfate ions. At Hailei Chemical, we supply anhydrous sodium sulphate with a purity ≥99.0%, tailored for industrial buyers who need precise particle size distribution, low chloride content, and consistent bulk density.
Why does this distinction matter for your sourcing decisions?
Having clarified that, let’s deep-dive into the physical specifications of sodium sulphate that every industrial buyer must evaluate.
When sourcing physical properties of sodium sulphate, your material’s performance in manufacturing hinges on several key parameters. The anhydrous form (Na2SO4) is a white, crystalline powder or granular solid with a molecular weight of 142.04 g/mol. It melts at 884°C and boils at 1,429°C, yet it exhibits a peculiar solubility curve: its solubility increases from 4.76 g/100 mL at 0°C to a maximum of 42.7 g at 100°C, then decreases beyond that point—a critical consideration when your process involves hot solutions.
For B2B users, the most actionable physical properties to review on your Certificate of Analysis (CoA) are:
Understanding these physical properties of sodium sulphate directly impacts your production yield, equipment maintenance intervals, and end-product quality. Next, we’ll address another common query that surfaces in chemical comparisons.
Procurement teams often weigh sodium sulphate vs sodium sulphite because both are white, sodium-based salts used in bulk. Yet their chemistry and applications are miles apart. Sodium sulphite (Na2SO3) is a reducing agent, whereas sodium sulphate (Na2SO4) is a fully oxidized, stable salt with minimal reactivity. This distinction dictates where you use each.
| Property | Sodium Sulphate (Na₂SO₄) | Sodium Sulphite (Na₂SO₃) |
|---|---|---|
| Oxidation state | +6 (sulfate) | +4 (sulfite) |
| Primary function | Filler, flux, leveling agent | Oxygen scavenger, preservative, reducing agent |
| Typical pH (1% sol.) | Neutral (~6–8) | Alkaline (~9–10) |
| Key applications | Detergents, glass, textile dyeing, kraft liquor | Water treatment, food preservation (E221), photographic developers |
| Stability | Thermally stable, non-hygroscopic | Easily oxidizes to sulfate in air; requires careful storage |
If your factory needs a cost-effective diluent in dye powder or a glassmaking flux that lowers melting temperature without introducing redox interference, sodium sulphate is the clear choice. For oxygen-sensitive processes like boiler water treatment, sodium sulphite would be selected. The good news: at Hailei’s sodium sulphate product page, you can request technical datasheets to confirm that the material won’t introduce unwanted reducing properties into your system.
The search query how to use sodium lauryl sulphate typically comes from personal care and detergent formulators who want to incorporate that foaming power. SLS is usually added at 0.5–5% in shampoo, body wash, or toothpaste after the water phase has been heated to 60–70°C to ensure complete dissolution. It requires high-shear mixing to avoid lumps and must be neutralized if using the acid form. But this guide is about industrial sodium sulphate—so let’s pivot to what matters for B2B buyers.
In large-scale operations, how to use sodium sulphate effectively depends on your application:
Avoid the mistake of treating sodium sulphate like SLS—there’s no need for high-shear emulsification, and the powder is not a direct surfactant. Instead, focus on controlled screw feeding, proper silo aeration, and electrostatic discharge precautions during material transfer.
If you are researching a sodium sulphate manufacturer in India, you’re likely comparing cost, logistics, and quality consistency. India certainly has several production sources—often as a by-product of viscose rayon or synthetic detergent processes. However, businesses with high-purity requirements or large-volume container exports frequently turn to Chinese exporters like Weifang Hailei Fine Chemical Co., Ltd. for a more reliable supply chain.
Here’s how to evaluate any sodium sulphate supplier, whether based in India, China, or elsewhere:
In short, a sodium sulphate manufacturer in India might meet basic specs for low-sensitivity applications, but for demanding formulations—such as high-clarity float glass or premium enzyme detergent powders—buyers increasingly choose verified exporters with a track record of chemical specification adherence.
Understanding TCO (total cost of ownership) goes beyond the price per metric ton. Sodium sulphate that caking in your silo, introduces iron specks in glass, or requires extra rinsing in textile processing will erode margins. Smart buyers focus on specifications:
These parameters aren’t just numbers—they directly affect your production KPIs. At Hailei Chemical, each batch is tested per GB/T 6009-2014 or customer-specific methods before release.
Sodium sulphate is chemically stable, but mishandling can still cause product degradation or workplace hazards. Keep it in sealed, moisture-proof packaging away from strong acids (which could liberate sulfuric acid mist). Use dust extraction when unloading; while not toxic, the fine powder can cause temporary respiratory irritation. Unlike SLS, you don’t need special PPE against skin sensitization—though always wear safety goggles and dust masks as a baseline industrial practice.
For bulk storage, use unheated silos with a cone angle of at least 60° and vibratory discharge aids if the ambient humidity is above 60%. When using sodium sulphate vs sodium sulphite in the same facility, segregate storage areas clearly—accidental mixing can ruin a batch that requires reductive properties.
Circling back to where we started: why sodium lauryl sulphate used in toothpaste is a legitimate consumer question, and it has an indirect B2B insight. SLS is produced via sulfation of lauryl alcohol with sulfur trioxide, then neutralized with sodium hydroxide. That manufacturing chain itself doesn’t require sodium sulphate—but the detergent factories that often co-locate near SLS production do. Many integrated surfactant plants also produce detergents, where sodium sulphate becomes the economic backbone of their powder formulations. So while you won’t find Na₂SO₄ in a toothpaste tube, the global demand for affordable, high-purity sodium sulphate is strongly correlated to the broader home and personal care industry. When you source from a reliable partner like Hailei, you’re tapping into that integrated supply intelligence.
Whether you’re substituting an inconsistent sodium sulphate manufacturer in India or scaling up your detergent plant, you need a partner who understands the nuances—from physical properties to logistics. Hailei Chemical delivers anhydrous sodium sulphate with guaranteed 99% purity, tailored particle sizing, and responsive export documentation. Our team can provide SDS, CoA, and sample lots to qualify the material in your process.
Request your customized quote today or visit the sodium sulphate product page for full technical data. Let’s turn your procurement challenge into a competitive advantage with consistent, industrial-grade sodium sulphate from a supplier that puts buyer education first.
When sourcing industrial chemicals, confusing sodium sulphate with sodium sulphite is a common and potentially expensive error. Both are white, water-soluble sodium salts, and their names differ by only one letter. However, they possess fundamentally different chemical behaviors, uses, and handling requirements. Understanding sodium sulphate vs sodium sulphite is essential for procurement managers, chemical engineers, and formulators across industries like detergent manufacturing, glass production, textile dyeing, and food preservation. In this guide, we break down the properties, applications, and procurement considerations so you can order with confidence—and we’ll also show you where high-purity sodium sulphate anhydrous fits into your supply chain.
The confusion between sodium sulphate (Na₂SO₄) and sodium sulphite (Na₂SO₃) often starts with a simple typo in a purchase order. But their molecular differences translate into vastly different industrial roles. Sodium sulphate is the stable, fully oxidized sulphate salt, while sodium sulphite is a reducing agent that contains a sulphur atom in a lower oxidation state. This seemingly minor distinction is what makes one an inert filler in detergent powder and the other an active oxygen scavenger in water treatment. Buyers who treat these chemicals as interchangeable risk product failure, safety incidents, and regulatory non-compliance. Let’s examine exactly how they differ.
To appreciate the contrast, start with the fundamentals. The table below highlights key chemical and physical properties that influence selection.
| Property | Sodium Sulphate (Na₂SO₄) | Sodium Sulphite (Na₂SO₃) |
|---|---|---|
| Molecular Weight | 142.04 g/mol (anhydrous) | 126.04 g/mol |
| Appearance | White crystalline powder or granules | White crystals or powder |
| Oxidation State of Sulphur | +6 (fully oxidized, stable) | +4 (easily oxidized to +6) |
| Chemical Behavior | Neutral salt, acts as inert filler, electrolyte | Reducing agent, antioxidant, oxygen scavenger |
| pH in Solution | Nearly neutral (pH 6-8) | Mildly alkaline (pH ~9-10) |
| Stability | Stable under normal conditions; hygroscopic above 32.4°C (Glauber’s salt transition) | Gradually oxidizes to sulphate when exposed to air; needs sealed storage |
| Common Grades | Anhydrous 99% min., decahydrate (Glauber’s salt), salt cake | Anhydrous 96–99%, food grade (E221), photographic grade |
| Everyday Name | Glauber’s salt (decahydrate), salt cake (anhydrous) | E221 (as food additive) |
The crucial takeaway: sodium sulphate is the “end member” of sulphur oxidation and remains chemically passive, while sodium sulphite is intrinsically reactive. This reactivity determines where each compound belongs in your factory.
In powder detergent formulations, sodium sulphate is the backbone filler. High-purity anhydrous sodium sulphate at 99% purity allows manufacturers to standardize active ingredient levels while improving powder flow and preventing caking. Its neutral pH and chemical inertness ensure it does not interfere with surfactants, enzymes, or optical brighteners. Sodium sulphite, with its reducing power, would destroy oxidative bleaching agents (like sodium percarbonate) and deactivate enzymes—a disaster for detergent performance. Therefore, for this application, there is absolutely no room for substitution.
Sodium sulphate serves as a fining agent in glass production, helping to remove gas bubbles and homogenize the melt. It also acts as a flux, lowering the melting temperature of silica. The stable sulphate ion works perfectly in the high-temperature, oxidizing environment of a glass furnace. Sodium sulphite, on the other hand, would release sulphur dioxide (SO₂) prematurely and cause foaming defects, making the glass riddled with seeds and blisters. Glass factories specify high-purity salt cake (anhydrous sodium sulphate) for consistent furnace operation.
In textile processing, sodium sulphate is a key dyeing auxiliary, particularly for reactive dyes on cotton. It promotes even dye exhaustion by controlling ionic strength, resulting in uniform color. This role depends on the sulphate ion’s inertness. Sodium sulphite could act as a reducing agent, potentially stripping some dyes or altering shade. For reliable fabric quality, textile mills consistently choose sodium sulphate over any potentially reducing salt.
In the kraft pulping process, sodium sulphate is used as a makeup chemical in the recovery boiler. It is reduced to sodium sulphide, which is a vital component of white liquor. Interestingly, here sodium sulphate serves as a sulphur source that will be reduced, but the fed chemical must be the fully oxidized sulphate to safely enter the high-temperature recovery cycle. Sodium sulphite would decompose differently and could cause corrosion and upset the sulphidity balance. Thus, even in a reductive step, sulphate is the correct raw material.
Sodium sulphite is widely used as a dechlorinating agent in water treatment, an oxygen scavenger in boiler feedwater, and as a preservative in the food industry (E221) for dried fruits and wine. It also finds use in photographic developers as a protective agent that prevents oxidation of developing agents. The common thread: every application relies on its ability to consume oxygen or other oxidizing species. Sodium sulphate cannot perform any of these functions—it does not react.
From a safety perspective, sodium sulphate is extremely low-hazard. It is not classified as dangerous under most regulations, is non-flammable, and poses minimal health risks beyond mild skin or eye irritation upon heavy exposure. It requires standard PPE: gloves, dust mask, and safety glasses. Storage is straightforward—keep dry and away from strong acids.
Sodium sulphite requires more caution. It can release toxic sulphur dioxide gas if contacted with acids or heated strongly. It is a skin and respiratory irritant and may cause allergic reactions. Additionally, food-grade sodium sulphite must meet stringent purity specifications and is regulated under preservative legislation. For industrial buyers, this means that safety data sheets (SDS), storage protocols, and employee training for sodium sulphite are more demanding than for sodium sulphate. When auditing suppliers, ensure both the chemical itself and the accompanying documentation match exactly the product you need.
When purchasing bulk sodium sulphate, procurement teams prioritize consistent quality, reliable logistics, and competitive pricing. This is especially vital for large-volume consumers in the detergent and glass sectors. While some buyers initially search for a sodium sulphate manufacturer in India due to the strong local chemical industry, global supply chains offer compelling alternatives. Chinese producers like Weifang Hailei Fine Chemical Co., Ltd. have established themselves as leading exporters, delivering 99% pure anhydrous sodium sulphate to destinations worldwide. Factors to evaluate in a supplier include:
Hailei Chemical’s anhydrous sodium sulphate is produced through a controlled process that ensures low moisture and consistent crystal size—factors that directly affect flowability and blending in detergent plants. Our logistics team coordinates full-container-load shipments (20–27 metric tons per FCL) to major ports, helping glass factories and detergent manufacturers streamline inventory management. Whether you are comparing offers from a sodium sulphate manufacturer in India or exploring direct procurement from China, verify the material’s inertness and application suitability—never assume sulphate and sulphite are interchangeable.
A frequent question from individuals unfamiliar with industrial terminology is: what is the everyday name for sodium sulphate? The answer lies in the historical discoveries and forms of the compound. The decahydrate form (Na₂SO₄·10H₂O) is widely known as Glauber’s salt, named after the German chemist Johann Rudolf Glauber who first synthesized it in the 17th century. It is still encountered in some cooling packs and as a laxative in veterinary medicine. The anhydrous form sold to industry is often referred to as salt cake—a nod to its production history from the salt cake process in hydrochloric acid manufacturing. While you won’t find “Glauber’s salt” on a bulk chemical transportation label, it is the answer when someone asks for the common name.
The uses of sodium sulphate in daily life are more extensive than most people realize, though they usually occur behind the scenes:
Interestingly, none of these household applications tolerate sodium sulphite because its reducing power would either degrade the product or fail to deliver the intended physical effect. This underlines the importance of getting the chemical identity right not only at the industrial scale but also for end-consumer safety.
It bears repeating: a purchasing decision founded on the assumption that sodium sulphate and sodium sulphite are just spelling variants can lead to production downtime, safety incidents, and rejected batches. Here are three real-world scenarios that illustrate the risks:
The best defense is a thorough technical review of the bill of materials and a trusted chemical partner who understands the nuance. When you receive your shipment, always cross-check the certificate of analysis to confirm that the chemical name, CAS number (7757-82-6 for sodium sulphate; 7757-83-7 for sodium sulphite), and purity align with your purchase order.
At Weifang Hailei Fine Chemical Co., Ltd., we specialize in 99% pure anhydrous sodium sulphate designed for exacting industrial applications. Our expert team assists procurement managers in navigating the subtle yet critical distinctions between sodium sulphate and sodium sulphite, ensuring you receive the right product, documentation, and logistic support every time. Whether you operate a detergent factory, glass furnace, or textile mill, our bulk sodium sulphate shipment options are tailored to your production schedule.
Ready to source your next supply? Request a detailed quote today and let us demonstrate how high-purity sodium sulphate can optimize your manufacturing process—without the risk of cross‑contamination or misapplication.
When industrial buyers search for “properties of sodium sulphate,” they often are actually looking for information on sodium sulfite—a chemically distinct compound with entirely different reactivity and applications. This confusion is surprisingly common in procurement departments, especially across power generation, pulp and paper, and textile finishing industries. Understanding the precise physical and chemical attributes of sodium sulfite (Na2SO3), how it differs from sodium sulfate (Na2SO4), and what specifications matter most in bulk purchasing is essential for avoiding costly formulation errors and ensuring compliance with process requirements. This article delivers a comprehensive comparison, detailed property data, and actionable procurement insights for technical buyers sourcing high-purity sodium sulfite from reliable Chinese exporters like Weifang Hailei Fine Chemical Co., Ltd.
The mix-up between these two chemicals arises from their similar names and historical spelling variants (“sulphate”/”sulfate” and “sulphite”/”sulfite”). However, the difference is not merely semantic—it is a fundamental divergence in oxidation state and chemical behavior. Sodium sulfate is a fully oxidized sulfur compound (sulfur +6) that acts primarily as an inert filler, drying agent, or detergent builder. Sodium sulfite, in contrast, contains sulfur in a +4 oxidation state, making it a powerful reducing agent and oxygen scavenger. This structural nuance is critical for industrial chemists and process engineers.
The chemical formula of sodium sulfite is Na2SO3, with a molecular weight of 126.04 g/mol for the anhydrous form. Sodium sulfate, on the other hand, carries the formula Na2SO4 (molecular weight 142.04 g/mol). That extra oxygen atom dramatically alters solubility behavior, pH in solution, and thermal stability. While sodium sulfate dissolves in water to give a neutral solution, sodium sulfite hydrolyzes to produce a mildly alkaline solution (pH ~9–10 for a 10% aqueous solution), which is a key property in its role as a neutralizer in textile bleaching. If a boiler water treatment program accidentally substitutes sodium sulfate for sodium sulfite as an oxygen scavenger, the consequences would be catastrophic: no oxygen removal would occur, and pitting corrosion could rapidly degrade heat exchanger tubes.
From a procurement standpoint, requesting a quote for “sodium sulphate” when sodium sulfite is needed can lead to receiving the wrong chemical entirely. This highlights why specifying the correct CAS number—7757-83-7 for sodium sulfite, 7757-82-6 for sodium sulfate—and exact grade (anhydrous, heptahydrate, technical, or food grade) is non-negotiable in POs. In the following sections, we explore the authentic properties of sodium sulfite as a high-performance industrial reducing agent.
For engineers and quality managers, a detailed property sheet is the starting point for material acceptance or rejection. Below we summarize the key characteristics of commercial sodium sulfite, referencing both the anhydrous and heptahydrate forms typically supplied by Hailei Chemical.
Sodium sulfite is commercially available as a white, granular or crystalline powder. The anhydrous form (Na2SO3) is favored in applications where water content must be minimized, such as in concentrated boiler water treatments. The heptahydrate (Na2SO3·7H2O) appears as larger, efflorescent crystals that can lose water of crystallization when exposed to warm, dry air. Buyers should specify the form based on storage conditions and dosing equipment—the heptahydrate is easier to dissolve but has a lower active sulfite content per kilogram (approximately 50% Na2SO3 equivalent).
Standard technical-grade sodium sulfite from Hailei Chemical guarantees a minimum purity of 96–98% (anhydrous basis), with typical values exceeding 97%. This high assay is essential for oxygen scavenging efficiency in high-pressure boilers, where residual sulfite must be reliably predicted. Impurities like sulfate, chloride, and heavy metals are tightly controlled: sulfate (as Na2SO4) is held below 2.5%, chloride below 0.1%, and iron below 50 ppm. For photographic-grade supply, even lower heavy metal thresholds are maintained to prevent fogging of emulsions. Always request a certificate of analysis (CoA) that includes these trace elements.
Sodium sulfite is highly soluble in water, with solubility increasing modestly with temperature: approximately 28 g/100 mL at 20°C and 37 g/100 mL at 80°C (anhydrous). In practical tank mixing, solution concentrations of 10–15% are commonly prepared. The dissolution is endothermic, so warm water (30–40°C) accelerates mixing without degrading the product. Notably, sulfite solutions are sensitive to oxidation by air; effective storage systems use closed tanks with nitrogen blanketing to maintain reducing capacity.
A 10% aqueous solution of sodium sulfite has a pH in the range of 9.0–10.5, which contributes to its role as a bleach neutralizer in textiles, where it can both quench residual peroxide and adjust pH without the need for separate alkali. As a reducing agent, it readily reacts with dissolved oxygen (DO) to form sodium sulfate, a reaction catalyzed by trace metals like cobalt or copper. This redox behavior defines its core value proposition in boiler water treatment (sodium sulfite oxygen scavenger). The consumption ratio is roughly 7.9 mg of anhydrous sodium sulfite per mg of dissolved oxygen, making dosage calculations straightforward for power plant chemical engineers.
Solid sodium sulfite is hygroscopic and should be stored in tightly sealed bags at temperatures below 30°C, away from acids and oxidizing agents. Under recommended conditions, a shelf life of 12 months is achievable without significant loss of assay. The heptahydrate is more prone to caking; therefore, tropical or humid environments favor the anhydrous grade. Bulk sodium sulfite is typically packaged in 25 kg woven polypropylene bags with an inner PE liner, or in 1000 kg supersacks for high-volume consumers.
While the properties of sodium sulphate (inertness, low cost) lead to its use in detergents and glassmaking, the reducing power of sodium sulfite unlocks a different set of high-value applications. The following sectors represent the largest demand pools for technical-grade sodium sulfite globally.
In medium- and high-pressure steam generators, dissolved oxygen is the primary driver of localized pitting corrosion. Sodium sulfite is the most cost-effective chemical oxygen scavenger for pressures up to 1,500 psi, beyond which thermal decomposition to corrosive sulfur compounds requires switching to hydrazine alternatives. Typical feed rates range from 10 to 40 mg/L of bulk sulfite solution into the deaerator storage section or feedwater line. A residual sulfite concentration of 20–40 ppm is maintained in the boiler water to provide a robust safety margin. Buyers from power plants must ensure the sulfite source is low in catalytic metals that could accelerate oxidation before the scavenger reaches the boiler drum.
Sodium sulfite serves multiple roles in pulp mills: as a cooking chemical in neutral sulfite semi-chemical (NSSC) pulping, as a lignin-softening agent, and as a deinking assistant. In NSSC processes, a buffered sulfite liquor (pH 7–9) delignifies wood chips without excessive carbohydrate degradation, yielding high-strength corrugating medium pulps. Paper mills also employ sulfite solutions to eliminate residual chlorine or peroxide after bleaching stages, preventing brightness reversion. Consistent assay and low iron content are critical to avoiding dark spots in finished paper. Our sodium sulfite routinely meets these demanding brightness standards.
After hydrogen peroxide bleaching of cotton or linen fabrics, even trace amounts of residual peroxide can cause uneven dye uptake or fiber damage during drying. Sodium sulfite effectively consumes that peroxide while its natural alkalinity assists in pH adjustment. A typical neutralizing bath contains 1–3 g/L sodium sulfite at 50–70°C for 15 minutes. The textile finishing industry prizes sulfite because it does not introduce additional acidic species that would require subsequent rinsing. This single-product neutralization simplifies process control and reduces chemical inventories for fabric finishing plants.
Sodium sulfite is a cornerstone of traditional black-and-white photography, acting as a preservative in developing solutions. It protects developing agents (like hydroquinone) from aerial oxidation, prolonging bath life and maintaining consistent film speeds. High purity, low chloride, and virtual absence of heavy metals are mandatory for photographic-grade sulfite. Hailei Chemical can supply material meeting relevant ISO and ANSI standards for the imaging industry, with batch-wise heavy metal testing available on request.
In the leather industry, sodium sulfite assists in the lime-sulfide unhairing process by breaking disulfide bonds in keratin, allowing clean hair removal without excessive grain damage. It also serves as a mild reducing agent in bating operations to adjust the hide’s softness. The 96% purity grade provides a cost-optimized balance between reactivity and handling safety compared to liquid sodium sulfide, which is more hazardous.
Sulfite salts, including sodium sulfite, are approved as food additives (E221) for their antioxidant and antimicrobial properties, used in dried fruits, wine, and some processed potato products to prevent browning. While industrial buyers do not typically procure food-grade sodium sulfite in the same volumes as technical grade, those supplying food ingredient manufacturers can request certification to FCC or JECFA monographs. The keyword “sulfite in food products” often appears in consumer safety discussions regarding sulfite sensitivity; from a B2B perspective, assuring correct labeling and allergen declarations is part of a responsible supplier’s service.
Sourcing bulk sodium sulfite from overseas manufacturers demands rigorous attention to quality assurance, logistics, and regulatory documentation. Here we outline the key factors that procurement managers in power generation, paper mills, and textile factories should evaluate before placing volume orders.
Always align these specifications with your end-use requirements. For instance, a combined-cycle power plant may tolerate slightly higher sulfate, while a photochemical manufacturer cannot. A reputable supplier like Hailei Chemical will provide a detailed CoA with each lot, including the chemical formula of sodium sulfite validated by titration (iodometric) and impurities by ICP or AAS.
Export-standard packaging protects the hygroscopic product during maritime transit. Our typical configurations include:
For sea freight, containers are often loaded with desiccant packs and plastic wrap to combat humidity in the container headspace. A 20-foot FCL can hold approximately 18–20 metric tons of bagged sodium sulfite, while a 40-foot FCL accepts roughly 25–26 tons. Buyers planning quarterly or annual deliveries can negotiate optimized shipping rates and buffer stock at Hailei’s Qingdao warehouse.
International shipments require a suite of documents: Material Safety Data Sheet (MSDS) compliant with GHS, Certificate of Origin (Form E for ASEAN markets), and often a Letter of Guarantee for product consistency. Sodium sulfite is classified as a non-dangerous good for transport under most regulations, which simplifies ocean freight compared to oxidizing or corrosive chemicals. Nevertheless, some jurisdictions may classify waste sulfite solutions as hazardous; your supplier should advise on correct HS codes (usually 2832.10) and local registration requirements.
In the vast landscape of internet queries, some oddities emerge. One recurring search is “how does sodium sulfide help ingrown toenails.” This query conflates two entirely separate chemicals: sodium sulfide (Na2S) and sodium sulfite (Na2SO3). Let’s clarify this confusion and put safety first.
Sodium sulfide is a strongly alkaline, corrosive compound used almost exclusively in heavy industry, particularly in the kraft paper process and in leather dehairing as sodium sulfide flakes or liquid. It is not approved for any topical medicinal use; in fact, it can cause severe skin burns and is toxic by inhalation. There is no scientific or medical basis for using sodium sulfide on ingrown toenails. This myth may stem from a misunderstanding of the term “sulfide” when people hear about sulfur-containing creams for fungal infections, but those are entirely different substances (e.g., selenium sulfide or sulfur ointments). Under no circumstances should sodium sulfide be applied to the skin.
Sodium sulfite, on the other hand, is also not intended for dermatological treatment. Its industrial reducing properties do not translate to any beneficial effect on ingrown nails. The only connection lies in the similar-sounding name, which can trap unwary online searchers. As chemical manufacturers and exporters, we emphasize that both sodium sulfite and sodium sulfide are industrial chemicals to be handled by trained personnel with appropriate PPE, not home remedies.
Buyers in the leather industry who do require sodium sulfide for unhairing processes should source a dedicated product from a reliable supplier. Hailei Chemical focuses on sodium sulfite and related sulfite derivatives, ensuring that every product is clearly labeled, safely packaged, and sold with comprehensive application guidance to prevent misuse.
When sourcing bulk sodium sulfite from China, technical expertise, production consistency, and supply chain reliability separate transactional vendors from true partners. Hailei Fine Chemical operates a modern production facility in Weifang, Shandong, with an annual capacity exceeding 30,000 metric tons of sulfite products. Our process control includes in-line oxidation monitoring to maintain the precise balance of sulfite to sulfate, ensuring every delivery meets your purity expectations.
Our quality management system runs under ISO 9001:2015, with dedicated laboratory testing for each production batch—iodometric assay, pH, Fe, Cl, heavy metals, and water content—before release. We understand that a power plant shutdown due to off-specification oxygen scavenger can cost millions; that’s why our quality tolerance zero. Additionally, our logistics team coordinates with major shipping lines to provide competitive CFR/CIF pricing to ports worldwide, reducing your freight cost and complexity.
We also support technical inquiries: from calculating sulfite feed rates for your boiler system to recommending the optimal packaging for your plant’s humidity conditions. With more than 15 years of export experience, Hailei has earned the trust of over 400 industrial clients across 40 countries. Whether you need a single container trial shipment or a long-term annual contract, we are ready to deliver sodium sulfite anhydrous and heptahydrate that performs exactly as expected.
Getting the right chemical starts with clarity about properties and specifications. Don’t let the confusion between sodium sulphate and sodium sulfite lead to costly mistakes. If your operation demands high-purity sodium sulfite for water treatment, pulp processing, textiles, or photography, contact Hailei Chemical today. Our technical sales team will help you select the optimal grade, prepare shipment documentation, and provide a competitive price for bulk delivery.
Request your sodium sulfite quote now or call us to discuss your specific application. Let’s transform your procurement challenge into a seamless, quality-assured supply stream.
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.