What is Sodium Sulphate in Hindi: A Complete Industrial Buyer’s Guide from China
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.
What is Sodium Sulphate in Hindi? (सोडियम सल्फेट क्या है?)
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.
Synonyms and Common Names for Sodium Sulphate
Understanding regional terminology helps avoid confusion during procurement. Sodium sulphate is also referred to as:
- Glauber’s salt (decahydrate form)
- Salt cake
- Disodium sulfate
- Thenardite (anhydrous mineral form)
- In Hindi: सोडियम सल्फेट, कभी-कभी ‘सफेद नमक’ या ‘डिटर्जेंट पाउडर फिलर’ भी कहा जाता है
Characteristics of Sodium Sulphate and Its Physical Properties
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.
Key Physical and Chemical Characteristics
- Appearance: White, free-flowing crystalline powder or granules
- Molecular weight: 142.04 g/mol (anhydrous)
- Melting point: 884°C
- Boiling point: 1,429°C (decomposes)
- Density: 2.664 g/cm³
- Solubility in water: Unusual temperature-dependent solubility; maximum solubility around 33°C (approximately 50 g/100 mL), decreasing at higher temperatures
- Hygroscopicity: Low – anhydrous sodium sulphate absorbs minimal moisture from air, making it an excellent filler in dry detergent powders
- pH (5% aqueous solution): 6–8 (neutral to slightly alkaline)
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.
Chemical Stability and Compatibility
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.
How Does Sodium Sulfate Dry a Solution? A Crucial Property for Organic Synthesis
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:
- Rapidly binding free water molecules through hydrogen bonding and lattice incorporation.
- Forming clumps or a hydrated solid phase that can be easily separated by filtration.
- Leaving the organic solvent virtually free of moisture without introducing reactive impurities.
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.
Industrial Applications of Sodium Sulphate: A Focus on the Indian Market
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.
Detergent Powder Filler
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.
Glass Manufacturing
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.
Textile Dyeing Auxiliary
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.
Kraft Paper Pulping
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.
Sodium Sulphate Bulk Price: Factors Impacting Your Landed Cost in India
A frequent concern for Indian buyers is the sodium sulphate bulk price. Procuring from China involves multiple cost components beyond the FOB rate.
Price Components Breakdown
- FOB Price (Qingdao/Tianjin): Typically ranges between $70–$120 per metric ton depending on purity (98% vs 99%), particle size, and market conditions (soda ash cost affects Mannheim process economics).
- Ocean Freight to India: $15–$25/MT for 20-foot containers carrying 25–27 MT. Fluctuations depend on fuel surcharges and port congestion.
- Customs Duty and IGST: India imposes a basic customs duty of around 7.5–10% on sodium sulphate (HS Code 28331100). IGST at 18% applies on the assessable value. Always verify the latest rates.
- Clearing and Forwarding Charges: Port handling, brokerage, and inland transport can add $10–$15/MT.
- Packing: Standard 25 kg PP/PE bags or 1,000 kg jumbo bags. Jumbo bags reduce unloading time at buyer’s premises.
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.
Quality-Related Price Adjustments
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:
- Na₂SO₄ content: ≥99.0%
- Water insoluble matter: ≤0.05%
- Calcium & Magnesium (as Ca): ≤0.05%
- Iron (Fe): ≤0.002%
- Moisture: ≤0.1%
- Whiteness: ≥90 (Hunter L)
Logistics and Storage Advice for Indian Importers
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.
Why Indian Industries Choose Hailei Chemical as Their Sodium Sulphate Supplier
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:
- Consistent batch-to-batch quality: Our in-house lab tests every lot before loading.
- Documentation accuracy: Certificate of Analysis, packing list, bill of lading, and GSP (Form A) for duty concessions under Asia-Pacific Trade Agreement (APTA).
- Credit flexibility: T/T, L/C at sight, or DP payment terms to suit your cash flow.
- Technical support: Our experts can advise on incorporating sodium sulphate in detergent agglomeration or glass batch optimization.
Frequently Asked Questions from Indian Buyers
Does sodium sulphate affect detergent cleaning power?
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.
Can you supply sodium sulphate in 50 kg bags?
Yes, we offer 25 kg, 50 kg, and 1,000 kg jumbo bags. Custom packaging with private labeling is also possible.
What is the lead time for delivery to Chennai?
From booking confirmation, production takes 7–10 days, and ocean transit to Chennai is about 18–22 days, totaling approximately 4–5 weeks.
Is anhydrous sodium sulphate equivalent to Glauber’s salt?
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.
Get Your Sodium Sulphate Bulk Quote Today
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.