Zinc Sulphate Heptahydrate Crystalline is a chemical reagent which is corrosive and irritant in nature and is moderately soluble in water and acid soluble sources that are compatible with sulphates. It has a chemical formula of ZnSO4. 7H2O with a molecular weight 287.6 grams per mol. The solubility of this compound increases as there is a slight elevation in the temperature. It has a density of 1.97 grams per cubic centimetres with a pH value in between 4 to 6.