The hexahydrate is better described as hexaaquacobalt(II) nitrate, [Co(OH2)6][NO3]2, as it consists of discrete [Co(OH2)6]2+ and [NO3]− ions. Above 55 °C, the hexahydrate converts to the trihydrate and at higher temperatures to the monohydrate. Cobalt Nitrate Hexahydrate uses in manufacture of cobalt pigments and invisible inks; decorating stoneware and porcelain; preparation of catalysts; production of vitamin B12 supplements.
- Formula
- CoH12N2O12
- Molar mass
- 291.031 g/mol
- CAS Number
- 10026-22-9
- Density
- 1.88 g/cm3
- Purity/Grade
- ≥99.0% (KT) (ACS Reagent) puriss. p.a.
- Appearance
- red crystalline
- Flash point
- Not applicable
- Water solubility
- Soluble
- Melting point/freezing point
- 55°C (131°F) - lit.
- pH
- 4.0 at 100 g/l at 20°C (68°F)