... It is a kind of magnesium compound. GradeMgSO4. 7H2O99.5%(min.)MgSO4. 7H2O98%(min.)MgSO4. 7H2O95%(min.)MgSO4. 7H2O90 ... even cause death. 3) IndustryUsed for ABS,PVC resin synthesis additives, paper making, printing industry and so on. It ... drug, magnesium trisilicate, meleumycin, acetylspiramycin drugs and so on. 5) light industryFor producing yeast, monosodium glutamate, artificial snow, drinks, ...