... % 3.7-12days delivery 4.Mainly used in feed/ food additive zinc sulfateZnSO4 is a colorless crystalline, water-soluble. ... 00) Usage: It is used to supply zinc in animal feeds, fertilizers, and agricultural sprays. ZnSO4·7H2O is ... used in making , in coagulation baths for , in for zinc plating, as a in dyeing, as a ... with acid and alkali and color matter. for animal feed grade zinc sulfate