... max Heavy Metal:0.002% max Magnesium Sulphate Heptahydrate Product NameMagnesium sulphate heptahydrateCAS No.10034-99-8Molecular Weight246.48Structural ... dry) air, shuck crystal water into anhydrous magnesium sulfate gradually after heating. Not include any poisonous ... pharmacy, fertilizer, currying, printing, color, porcelain, match, detonator, fireproof materials and feed additives of magnesium salt. ...