... 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. ... at 200oC,lossing all of its crystal water becomes anhydrous compounds.Use: --Mainly used in fertilizer, tanning ... .Protection from sunshine,rain,moisture. Magnesium Sulphate