... 2.Mainly used for foliar fertilization 3.transparent crystal Magnesium Sulphate HeptahydrateMOLECULAR FORMULAR: MgSO4.7H2OCAS10034-99-8SPECIFICATION:HG/ ... materials, Mg-salt, dyeing, medicine and food additives;3. Extensively used in food, pharmaceutical and animal remedy industries. ITEMSSpecialty ... 0.50.5Pb ,%,≤11Water insoluble,%,≤0.050.05 Magnesium Sulphate Heptahydrate used in food, Medicine