purity99.6%min for medicine,printing,leather,textile,Metallurgy industry white powder ... sublimate at 100oC, easily dissolve in alcohol and water.SpecificationItemsStandardPurity99.6%min.Sulphate SO420.08%max.Heavy metals (Pb+)0.001 ... basic materials for chemical industry.Packing:In plastic woven bag with inner PE bag 25kgs net. Refined 99.6 %min oxalic acid