... manufacturer and Supplier of zinc sulphate ,ferrous sulphate ,manganese sulphate, magnesium sulphate , copper sulphate. Formula: MgSO4.7H2O HS Code: 28332100 ... 001% max Water Insoluble 0.1% max Function of magnesium sulphate Magnesium is the center element of chlorophyll,photosynthes can't ... soil quality. The symptoms of lacking of "sulfur"and"magnesium": 1 )it lead to exhaustion and death if it' ...