... free flowing used in fertilizer Magnesium sulphate,also named magnesium sulfate heptahydrate, epsom salts; bitter salts, when it is ... used in industry, it is MgSO4·7H2O.It can be used in medicine, textile, papermaking, metallurgy ... used as fertilizer, feedstuff additives.99% agri grade Magnesium sulfate heptahydrate quality index: AppearanceWhite small granularMain content99% minMgSO448.59% ...