Zinc Sulphate As Zinc additive in feed-processing, activator in latex paper; trace nutrient in animal feeds; CAS No.: 7446-20-0 UN No.:3077HS No.: 28332600[Properties:Zinc sulfate(ZnSO4·7H2O), also named white vitriol. It is an White flowing powder, deliquescence in the air, slightly soluble in water, slightly soluble in alcohol, insoluble in the acetone.Storage:Dry place and sealed ...