... .Pb<10ppm 3.As<5ppm 4.Cd<10ppm Zinc Sulphate Hepta crystal1. Molecular Formula : ZnSO4·7H2O2. CAS# : 7446-20-7 3. ... , Agriculture, Production of paint and varnishes, glues, Titane Dioxide, Zinc Sterate and Zinc-Alkyl-di thipcarbamate(Fungicide), Rubber As accelerator, flotation of ... ores, Electroplating and surface treatment, Animal feed. best price-zinc sulphate hepta-for animal or industrial use