Item | Description |
Product Name | Sodium Sulfate Anhydrous (Glauber's Salt, Thenardite) |
CAS No. | 7757-82-6 |
EINECS No. | 231-820-9 |
Molecular Formula | Na₂SO₄ |
Molecular Weight | 142.04 |
Appearance | White fine granules or powder; odorless, salty and slightly bitter taste |
Main Grades | Industrial Grade, Pharmaceutical Grade, Reagent Grade, Feed Grade |
Physical & Chemical Properties | Easily soluble in water, aqueous solution neutral (pH 6-8), insoluble in ethanol. Density approx. 2.68 g/cm³, melting point 884°C, boiling point 1429°C. Effloresces in dry air; hydrates to form sodium sulfate decahydrate upon contact with water. |
Product Features | High purity (≥98% or ≥99%), good flowability, low caking tendency, stable chemical properties, provides interfacial tension reduction and filling function. |
Main Applications | Detergent / Laundry Powder : Key filler (20%-40% content), improves flowability, reduces dust, adjusts density.Paper Industry : Used in kraft pulping process, partially replaces caustic soda, neutralizes alkaline waste liquor.Glass Manufacturing : Acts as a fining agent, eliminates bubbles, improves transparency.Dyeing / Textile : Reducing assistant for sulfur dyes, cotton boiling agent, accelerator for direct dyeing.Chemical Raw Material : Manufacture of sodium sulfide, sodium silicate (water glass), ammonium sulfate, etc.Leather / Tanning : Used in chrome tanning and as tanning auxiliary.Pharmaceutical / Veterinary : Laxative (as decahydrate), excipient for antiallergic drugs.Feed Additive : Carrier and diluent for trace minerals.Others : Water treatment, cooling agents, antifreeze, metal smelting, etc. |
Packaging | 25 kg/bag (PP woven bag with PE liner or paper-plastic composite bag), 50 kg/bag, 1000 kg jumbo bag; custom packaging available upon request. |
Storage Condition | Store in a cool, dry, well-ventilated warehouse, protected from moisture and rain; avoid mixing with acids and ammonium salts; keep sealed to prevent efflorescence. |
Transportation Requirements | Not dangerous goods; transport as general cargo. Protect from moisture, rain and sunlight; handle gently. |
Quality Standards | Industrial Grade: GB/T 6009-2014 (Class I premium ≥99.0%, Class II ≥97.0%), specifications include Na₂SO₄, chlorides, iron, moisture, whiteness, water insolubles, etc.Pharmaceutical Grade: Chinese Pharmacopoeia or USP/EP standardsFeed Grade: HG 2932-1999 (Na₂SO₄ ≥99.0%, As ≤2 mg/kg, heavy metals ≤10 mg/kg) |
Minimum Order Quantity (MOQ) | Regular MOQ: 20 MT (1×20'FCL); trial order: 5-10 MT available |
Delivery Time | Regular order: 7-15 working days; custom packaging/special specifications: 15-25 working days |
Payment Terms | T/T (30% deposit, 70% against copy of B/L), sight L/C; FOB, CFR, CIF terms supported |
