... mainly used in synthetic detergent, vinylon, sodium silicate, bleaching, dyeing, glass, tannage, papermaking, the anticorrosive treatment of gas pipe, metallurgy, surface ... : Net wt 25kg, 50kg or 1,000kg in PE bag lined plastic woven bag, Kept in dry and ventilating place, avoid ... .02Whiteness %≥8290 Mineral Na2SO4(SSA) 99%min for detergent and glass