... Used as food, feed, fertilizer, industry we're factory of Magnesium Sulfate,annual production is over 20000mts ... ,we can supply high quanlity and good price.Magnesium SulfateMolecular Formula: MgSO4·7H2O. Molecular weight:246 ... becomes anhydrous compounds.Use: --Mainly used in fertilizer, tanning, pringting and dyeing,activator,papermaking,plastic ... from sunshine,rain,moisture. Magnesium Sulphate