Cobalt(II) oxide
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| Cobalt(II) oxide | |
|---|---|
| Image:Cobalt(II) oxide.jpg | |
| General | |
| Systematic name | Cobalt(II) Oxide |
| Other names | Cobaltous Oxide, Cobalt Monoxide, Cobaltous Monoxide |
| Molecular formula | CoO |
| Molar mass | 74.93 g/mol |
| Appearance | A black powder |
| CAS number | 1307-96-6 |
| Properties | |
| Density and phase | 6.1 g/cm3 |
| Solubility in water | practically insoluble in water, soluble in strong acids |
| Melting point | 1933°C (2206 K) |
| Boiling point | ?°C (? K) |
| Hazards | |
| MSDS | (Use CAS#) Fisher Scientific |
| Main hazards | Respiratory tract inflammation possibly carcinogenic |
| NFPA 704 |
0
2
0
|
| R/S statement | R: 22 43 50-53 S: (2-)24-37-60-61 |
| RTECS number | GG2800000 |
| Related compounds | |
| Other anions | Cobalt(II) chloride |
| Other cations | ? |
| Related compounds | Cobalt(III) oxide |
| Except where noted otherwise, data are given for materials in their standard state (at 25°C, 100 kPa) Infobox disclaimer and references |
|
Cobalt(II) oxide is a blackish gray powder used extensively in the ceramics industry as an additive to create blue colored glazes and enamels as well as in the chemical industry for producing cobalt(II) salts.
Cobalt(II) oxide is a product of Cobalt(III) Oxide decomposing at 895 °C through the reaction:
- 2 Co3O4 → 6 CoO + O2
[edit] Ceramics
Cobalt(II) Oxide has for centuries used as a coloring agent on kiln fired pottery, the earliest examples go back to 12th century German pottery.[1]The additive provides a deep shade of blue named Cobalt Blue.
- ^ Zamek, Jeff: "A Problem With Cobalt?" Ceramics Today http://www.ceramicstoday.com/articles/zamek_cobalt.htm
[edit] External links
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