Na2SO4 ph9-11&6-8 1.excellent quality 2.competitive price 3.Big quantity 4.Refined by natural mine Na2SO4 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 lined plastic woven ...