... ISO 9001:2008 Company 2) Magnesium Sulphate Heptahydrate 3) HS Code 28332100 Magnesium Sulphate HeptahydrateMolecular Formula: MgSO4nH2O(n=0,1,2 ... ,3,4,5,6,7)Molecular Weight: 120 ... 18n (n= 0,1,2,3,4,5,6,7) CAS No: 10034-99-8 (MgSO47H2O)7487-88- ... -9.25.0-9.25.0-9.2Iron(Fe)%max0.00150.00150.00150.00150.00150.0015Chloride(Cl)% ...