Ferrous sulfate heptahydrate Common name: Green vitriol Molecular formula: FeSO?·7H?O Molecular weight: 278.05 CAS: 7782-63-0 Appearance: Light green solid Model: WBJSJ-CK1 Content: 90% Packaging: 25kg/bag Uses: Acts as a reducing agent, used as a water purifier, gas purifying agent, disinfectant, deodorant, feed additive, food additive, mordant, herbicide, and in the production of ink, pigments, etc.