1.Molecular Formula: FeSO4·7/1H2O 2.CAS No.: 7782-63-0/ 17375-41-6 3.Application: Feed additives, trace elements for animals; Water treatment for environment protection; Produce other Ferric salts, Ink, Iron oxide red, etc; Used as mordant, tanning agent, wood preservative & disinfectant, photoengraving; 4.Technical Specification: