Cobalt(II) carbonate (CoCO3)-Powder

Characteristic

Cobalt(II) carbonate is the inorganic compound with the formula CoCO₃. This reddish paramagnetic solid is an intermediate in the hydrometallurgical purification of cobalt from its ores. It is an inorganic pigment, and a precursor to catalysts. Cobalt(II) carbonate also occurs as the rare red/pink mineral spherocobaltite

Chemical formula:CoCO₃

Molar mass:118.941 g/mol

Appearance:red/ pink crystals (anhydrous);pink, violet, red crystalline powder (hexahydrate)

Density:4.13 g/cm³

Melting point:427 °C (801 °F; 700 K) ;decomposes before melting to cobalt(II) oxide (anhydrous);140 °C (284 °F; 413 K)

decomposes (hexahydrate)

Solubility in water:Cobalt (II) Carbonate is insoluble in distilled water.

Solubility product (Ksp):1.0·10−10

Solubility:soluble in acid;negligible in alcohol, methyl acetate

insoluble in ethanol

Refractive index (nD):1.855

Crystal structure:Rhombohedral (anhydrous);Trigonal (hexahydrate)

Application

Cobalt(II) carbonate is a precursor to cobalt carbonyl, cobalt salts and blue pottery glazes such as delftware. It is used as an essential element in dietary supplements and is also used in the manufacture of paints and pigments.