Cobalt (II) sulfate is also named as Cobalt sulfate or Cobaltous sulfate. It is a metallic salt and a toxic inorganic compound. The molecular or chemical formula of Cobalt (II) sulfate is CoSO4.

Cobaltous sulfate is a red to rose-pink solid. It has no odour and sinks as well as mixes well in water. It is insoluble in ammonia. It is widely used in the electrochemical industries, as a colouring agent, as a supplement for Vitamin B12deficiency, as a drier in paints and inks, and in storage batteries.

Properties 

Chemical formula : CoSO4∙(H2O)7

Appearance : Reddish ((anhydrous, monohydrate);Pink salt (hexahydrate)

Molecular weight : 

154.996 g/mol (anhydrous);173.01 g/mol (monohydrate);

263.08 g/mol (hexahydrate);281.103 g/mol (heptahydrate)

Density : 

3.71 g/cm3 (anhydrous);3.075 g/cm3 (monohydrate)

2.019 g/cm3 (hexahydrate);1.948 g/cm3 (heptahydrate)

Melting point : 735 °C (anhydrous)

 Uses

Agricultural chemicals (non-pesticidal)

Animal Feed

Corrosion inhibitors and anti-scaling agents

Electrowinning

Intermediates

Pigments

Plating agents and surface treating agents

Processing aids, specific to petroleum production

Batteries

Electrical and electronic products

Fuels and related products

Mining

Water treatment products