Magnesium Sulphate Heptahydrate Assay:99% min Ferrous:0.005% max Chloride:0.03% max Heavy Metal:0.002% max Magnesium Sulphate HeptahydrateProduct Name Magnesium sulphate heptahydrate CAS No. 10034-99-8 Molecular Weight 246.48 Structural Formula MgSO4.7H2 O Description Magnesium sulfate, another name, Epsom salt, bitter salt, white or colorless crystal, odorless, cool, little bitter, dissolve in water easily, little dissolve in ethanol, airslake into powder in (dry) air, shuck crystal water into anhydrous magnesium sulfate gradually after heating. Not include any poisonous impurity Appearance White or Colourless Crystal MgSO4.7H2O (on dry basis) 99.0% min Ferrous (Fe) 0.005% max Chloride (Cl) 0.03% max Heavy Metal (Pb) 0.002% max Arsenic (As) 0.0002% max Loss On Ignition 48-52% Packing In 25 kgs net palstic bag,25 mts/20FCL without pallet. Usage It can be applied in pharmacy, fertilizer, currying, printing, color, porcelain, match, detonator, fireproof materials and feed additives of magnesium salt. Storage Keep container tightly closed. Store in a cool, dry, well-ventilated area. Store in light-resistant cotainers.