... white granular; easily becoming efflorescent in the dry air.Uses:in agriculture: mainly used in mixed fertilizer or directly used as ... fertilizer for rubber, palm trees ;In industries: used in tanning, porcelain, pigment, match, fireproof materials, Mg ... and food additives;Extensively used in food, pharmaceutical and animal remedy industries. Good Price/Magnesium Sulphate/MgSO4.7H2O 99 ...