Nickelous Sulfate, usually refers to the inorganic compound with the formula NiSO4 (H2O)6. This highly soluble blue-coloured salt is a common source of the Ni2+ ion for electroplating. At least seven Sulfate salts of nickel (II) are known. These salts differ in terms of their hydration or crystal habit. The common tetragonal hexahydrate crystallizes from aqueous solution between 30.7 and 53.8
