Cobalt (II) acetate is commonly found as the tetrahydrate Co(C2H3O2)2-4. Cobalt(II) acetate tetrahydrate becomes anhydrous by 140C. It is used as an industrial catalyst like for oxidation and esterification.

Specifications of Cobalt acetate tetrahydrate or Cobalt diacetate tetrahydrate

Appearance: Reddish pink crystalline powder
Assay: 99.0- 102.0%
Chloride: 0.002% maximum.
Sulphate: 0.005% maximum.
pH (5% water): 6.0-8.0 maximum.
Lead: 0.001% maximum.
Copper: 0.002% maximum.
Nickel: 0.01% maximum.
Zinc: 0.01% maximum.
Iron: 0.001% maximum.
Magnesium: 0.005% maximum.
Calcium: 0.01% maximum.
Sodium: 0.05% maximum.
Potassium: 0.01% maximum.