zinc sulfateCas No.: 7733-02-0 Formula: ZnSO4*H2O M.W.: 179.45ZnSO4*H2O98%minZn35%minAs0.0005%maxPb0.0015%maxCd0.003%maxAppearance:White Crystal Powder. Usage:As Zinc additive in feed-processing, activator in latex paper; trace nutrient in animal feeds; fertilizer ingredient; zinc salts; ore flotation; fungicide; water purification. Package: In 25kg / 50kg plastic woven bag with plastic liner inside. 1000kg big bagStorage:Sealed, in cool dry place.