1) 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: 120.37+18n (n= 0,1,2,3 ... ,4,5,6,7) CAS No: 10034-99-8 (MgSO47H2O)7487-88-9 (MgSO4 ... and dehydration agent of feed and fertilizer. Magnesium Sulphate Heptahydrate( HS Code 28332100)