MAGNESIUM SULPHATE HEPTAHYDRATEMolecular Formula: MgSO4.7H2OHS Code: 28332100CAS:10034-99-8No. Test item unit Analysis Results1 Appearance White FreeCrystals2 Purity percent 99.633 MgO percent 16.344 Mg percent 9.845 PH (1in 20) 7.306 Chloride (Cl) percent 0.00807 Arsenic (As) percent 0.00018 Iron (Fe) percent 0.00099 Pb percent 0.000910 Particle size mm According to your request 1.Characteristics: Magnesium sulfate, another name, sulfate bitter, bitter salt, epsomite, Epsom salt,molecular formula MgSO4?7H2O, relative molecular weight 246.47. Feature in white or colorless crystal, odorless, cool, little bitter, dissolve in water easily