Product Name | Sodium Sulfate Anhydrous (Thenardite, Glauber's Salt) |
CAS No. | 7757-82-6 |
Molecular Formula | Na₂SO₄ |
Molecular Weight | 142.04 |
Appearance | White crystalline powder or fine granules |
Main Grades | Industrial Grade: 98%-99% purity, suitable for detergents, glass, paper, etc. Analytical Reagent (AR) : ≥99.0%, suitable for laboratory analysis, pharmaceutical excipients, and specialty chemical synthesis. Chemically Pure (CP) : ≥98.0%, suitable for general industrial applications. High Purity/Reagent Grade: 99.5%-99.9%+, suitable for high-end chemical and electronic applications. |
Quality Standard | National Standard GB/T 6009-2014 "Industrial Anhydrous Sodium Sulfate"; JIS K8987 (Japan); ACS Standard (US). Pharmaceutical grade compliant with Ph. Eur. and BP available upon request. |
Product Classification | Class I: Mainly for printing & dyeing, synthetic detergents, and vinylon industry. Class II: Mainly for glass, dyes, paper industry, etc. Class III: Mainly for inorganic salt industry as raw material. |
Key Specifications | Na₂SO₄ Content: ≥99.0% (Class I, First Grade) Water Insolubles: ≤0.05% Ca+Mg (as Mg) : ≤0.15% Chlorides (as Cl) : ≤0.35% Iron (Fe) : ≤0.002% Moisture: ≤0.20% Whiteness: ≥82% pH (5% solution) : approx. 7.5 (neutral) |
Physical Properties | Density: approx. 2.68 g/cm³ Melting Point: 884℃ Boiling Point: 1700℃ Appearance: White, odorless, bitter-tasting crystals or powder Hygroscopic: Absorbs moisture easily from air Solubility: Freely soluble in water and glycerol, insoluble in ethanol Solution pH: Neutral |
Features | High purity, low impurities; good solubility and flowability; stable chemical properties; cost-effective; customizable particle size (mesh) available upon request |
Main Applications | Detergent Industry: Used as filler in synthetic detergents and soaps (up to 30% in laundry powder formulas). Glass Manufacturing: Acts as a fining agent to remove bubbles; also serves as a fluxing agent. Pulp & Paper: Used as a cooking agent in kraft paper production. Textile & Dyeing: Used as a levelling agent to improve dye penetration and color fastness. Chemical Industry: Raw material for producing sodium sulfide, sodium silicate (water glass), and other chemicals. Pharmaceuticals: Used as a laxative and pharmaceutical excipient; also as a salting-out agent. Food Industry: Used as a food additive (fermentation regulator, preservative). Other Applications: Metallurgy, leather processing, synthetic fiber production, laboratory inert drying agent, pet litter, de-icing agent. |
Packaging | 25kg, 50kg, or 1000kg (jumbo bag) woven bags with PE liner; custom packaging available upon request. |
Storage Conditions | Store in cool, dry, well-ventilated warehouse; protect from moisture; avoid mixing with food, coal, or cement during storage. |
Shipping Requirements | Non-hazardous cargo; protect from moisture and rain; prevent package damage; avoid mixing with toxic substances. |
Certifications (Optional) | ISO 9001, REACH compliance, Kosher, Halal available upon request. Full export documents provided: Commercial Invoice, Packing List, Bill of Lading, CO/FORM E, COA (Certificate of Analysis), MSDS. |
Minimum Order Quantity | Standard: 20-25 tons (1×20'FCL); trial order: 5-10 tons negotiable. |
Delivery Time | Standard products: 7-15 working days; custom specifications: 15-25 working days. |
Payment Terms | T/T (30% deposit, 70% against B/L copy), L/C at sight; FOB/CFR/CIF supported. |
HS Code | 28331100 / 2833110000 |
