ferrous sulphate FeSO4.7H2O FeSO4.1H2O for feed additives, water treatment, Fertilizer, additives for cement etc... ferrous sulphate 1, Product name: ... used as the flocculant for waste water treatment, for purification of water, for producing ferric sulfate, for iron containing catalyst, ... as additive in compound fertilizer, as well as for production of FeSO4.H2O.Specification:FeSO4.7H2O ---------- 95 ...