Cobalt sulfate Molecular Formula: CoSO4 . 7H2O Molecular Weight: 281.10 ... purity:20% 20.5% 21% 24% 98. Product name: cobalt sulfate Appearance: brown or red crystals, density 1.948g/cm3 ... the chemical industry for making pigment containing cobalt and production of a variety of cobalt salts of raw materials, industrial batteries used ... , %: 0.002 max Packaging: 25 kg bags or barrels. Cobalt sulfate