Magnesium Sulphate Heptahydrate We offer Magnesium Sulphate, which is used in agriculture and gardening to rectify Magnesium deficiency in soil. Following are the general specification of Magnesium Sulphate manufactured by us: Purity as MgSo4.7H2O 99.90% (m/m) Magnesium Sulphate 48.5% (m/m) Magnesium Oxide as MgO 16% (m/m) Iron as Fe 5 ppm pH of 5% aqueous solution 7 % + 0.5% Chlorides of Cl 300 ppm Chlorides of K and Na 0.1% each Sulphate of K and Ca 0.1% each Calcium as Ca 300 ppm Heavy metals as Pb 2 ppm Arsenic as As203 2 ppm Packing: Packing is done in 25 kg / 50 kg laminated strong woven HDPE / PP bags. We also pack them in bags of 1.2 MT capacity as per the customer requirements.