... SGS,MSDS,COA,ISO2001:2008 Ferrous Sulphate Heptahydrate for industrial waste water treatment Used as fertilizer, ... function.2.Application Used in the aspect of making cement.Used as soil fertilizer, offer an ... economical source of iron and sulphur for it. For example, it could be used as agricultural ... of moss and lichen.Offer iron for making animal feed.Used for waste water treatment.4. How to ...