Zinc Sulfate 99% 1.Appearance: White crystal 2.Purity: 99%, 98% 3.7-12days delivery 4.Mainly used in feed/ food additive zinc sulfateZnSO4 is a colorless crystalline, water-soluble. The hydrated form, ZnSO4·7H2O, the mineral , was historically known as "white vitriol" and can be prepared by reacting zinc with aqueous .Synonyms: Sulfuric Acid, Zinc Salt, Monohydrate; Zinc Vitriol Monohydrate; ...