Cobalt(III) oxide
From Wikipedia, the free encyclopedia
| Cobalt(III) oxide[1] | ||
|---|---|---|
_oxide.JPG) | ||
| IUPAC name cobalt(III) oxide, dicobalt trioxide | ||
| Other names cobaltic oxide, cobalt sesquioxide | ||
| Identifiers | ||
| CAS number | 1308-04-9  | |
| PubChem | 4110762 | |
| Properties | ||
| Molecular formula | Co2O3 | |
| Molar mass | 165.8646 g/mol | |
| Appearance | black powder | |
| Density | 5.18 g/cm3 [2] | |
| Melting point | 1900 °C | |
| Structure | ||
| Crystal structure | Trigonal, hR30 | |
| Space group | R-3c, No. 167 | |
| Hazards | ||
| R-phrases | R22 R40 R43 | |
| S-phrases | S36/37 | |
(verify) (what is: / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | ||
| Infobox references | ||
Cobalt(III) oxide is the inorganic compound with the formula Co2O3. Although only two oxides of cobalt are well characterized, CoO and Co3O4,[3] procedures claiming to give Co2O3 have been described. Thus treatment of Co(II) salts such as cobalt(II) nitrate with an aqueous solution of sodium hypochlorite (also known as bleach) gives a black solid.[4] Some formulations of the catalyst hopcalite contain "Co2O3".
References
- ↑ Sigma-Aldrich product page
- ↑ Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0080379419.
- ↑ Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. p. 1675.
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