1.refine from mine 2.excellent quality 3.competitive price 4.ph9-11&6-8 5.Big quantity Sodium sulphate anhydrous(Glaubers salt) is mainly used in synthetic detergent, vinylon, sodium silicate, bleaching, dyeing, glass, tannage, papermaking, the anticorrosive treatment of gas pipe, metallurgy, surface treatment, filler industry, and so on.Packing & storage : Net wt 25kg, 50kg or 1,000kg in PE bag ...