99% Magnesium Sulphate Heptahydrate Fertilizer transparent crystal very dry, free flowing used in fertilizer Magnesium sulphate,also named magnesium sulfate heptahydrate, epsom salts ... , papermaking, metallurgy, electronics, or used as fertilizer, feedstuff additives.99% Magnesium sulfate heptahydrate fertilizer quality index: AppearanceWhite small granularMain content99% minMgSO448.59 ...