... sodium sulphide, water glass, or used in papermaking, glass Sodium Sulphate Anhydrous GLAUBER SALT1) Purity: 99%min. 2) Cas No.:7757 ... fine crystal or powder, easily soluble in waterSpecification:The sodium sulphate we offer is strictly in accordence with the national standard ... , vinylon, dye and dyeing, glass, pharmaceuticals, leather and rubber. Sodium Sulphate Anhydrous 99% GLAUBER SALT