Magnesium Sulfate is made of natural magnetite and sulfuric acid. It is an inorganic salt containing magnesium, sulfur and oxygen, with the formula MgSO4. It is found as the mineral kieserite. the overall global annual usage in the MID-1970s of the monohydrate was 2.3 million tons, of which the majority was used in agriculture. Features(whaspp8614707090699) in the dry air, MgSO4.7H2O is easily weather to powder; when heted gradually, it becomes anhydrous magnesium sulphate. It is soluble in water, slight soluble in alcohol and diethylether, insoluble in acetone. The melting point is 1124C, relative density (water = 1) is 2.66. Application 1.Magnesium Sulphate is a stable quality agricultural fertilizer that is made from Magnesium Sulphate Oxide of good quality. It is widely used in agriculture and forestry. There are two teatures: to be absorbed easily and not destroy the PH of soil. 2.MgSO4.7H2O can be used to produce magnesium-containing compound fertilizer and increase crop yield. Product Name MgSO47H2O Appearance Colorless crystal, odorless PH Neutrality Clarity of Solution Clear Chloride % 0.01 Heavy Metals % 0.001 Iron Salt % 0.0015 Arsenic Salt % 0.0002 Purity % 99.5