... 25M/FCL, 27Mt/FCL Raw material:mine compertitive quanlity and price Na2SO4 Uses : Sodium sulphate anhydrous(Glaubers salt) ... 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 ...