Product: Sodium Sulfate Anhydrous Formula: Na2SO4 CAS No.: 7757-82-6 Appearance: odorless white crystals or granulesCol Packing: In 50kg pp bag, 20mt per 20' FCL Usage: Application: Mainly used in detergents, paper-making, glass, dyeing, textile and porcelain industries. Specification of Sodium sulfate anhydrous: Items Standard Purity Na2SO4, % e 99 Water insoluble, % d 0.05 Calcium, Magnesium( Ca, Mg) , % d 0.15 Chloride ( As NaCl) , % 0.2 Whiteness, % 85 Iron ( as Fe) , % d 0.002 Moisture, % d 0.1 PH Value 6-8