It is a red crystal with light brown, soluble in water and methanol, but slightly soluble in ethanol and easily effloresces in air. Its specific gravity is 1.948.

 

Co:21%min

Cu:10ppm max

Fe:20ppm max

Pb:10ppm max

Cd:10ppm max

Mn:10ppm max

Ca:20ppm max

Mg:20ppm max

Ni:10pm max

 

Used in the manufacture of cobalt salt, paint driers, cobalt pigment, colored glaze porcelain, alkaline batteries and electroplating additive