Cobalt Monoxide (Cobalt Oxide) (CoO)-Powder

Characteristic




Cobalt(II) oxide or cobalt monoxide is an inorganic compound that appears as olive-green to red crystals, or as a greyish or black powder.soluble in acid, insoluble in water, alcohol, ammonia.Readily reduced by carbon monoxide to cobalt metal.It is easy to react with silica, alumina or zinc oxide at high temperature to produce various pigments.




Chemical formula：CoO

Molar mass：74.9326 g/mol

Appearance：black powder

Odor：odorless

Density：6.44 g/cm3 

Melting point：1,933 °C (3,511 °F; 2,206 K)

Solubility in water：insoluble in water

Magnetic susceptibility (χ)：+4900.0·10−6 cm3/mol

Crystal structure：cubic, cF8





Application




Cobalt(II) oxide has for centuries used as a coloring agent on kiln fired pottery. The additive provides a deep shade of blue named cobalt blue. The band gap (CoO) is around 2.4 eV. It also is used in cobalt blue glass.