Cobalt(II) hydroxide facts for kids
Quick facts for kids Cobalt(II) hydroxide |
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| IUPAC name | Cobalt(II) hydroxide |
| Other names | Cobaltous hydroxide, cobalt hydroxide, β-cobalt(II) hydroxide |
| Identifiers | |
| CAS number | |
| PubChem | |
| SMILES | [Co+2].[OH-].[OH-] |
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InChI
InChI=1/Co.2H2O/h;2*1H2/q+2;;/p-2
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| Properties | |
| Molecular formula | |
| Molar mass | 0 g mol-1 |
| Appearance | rose-red powder or bluish-green powder |
| Density | 3.597 g/cm3 |
| Melting point | |
| 3.20 mg/L | |
| Solubility | soluble in acids, ammonia; insoluble in dilute alkalis |
| Structure | |
| Coordination geometry |
rhombohedral |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
-539.7 kJ·mol−1 |
| Standard molar entropy S |
79.0 J·mol−1·K−1 |
| Hazards | |
| EU classification | Template:Hazchem Xn |
| NFPA 704 |
0
1
2
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| R-phrases | R20 R21 R22 R36 R37 R38 R43 |
| S-phrases | S24 S26 S36 S37 S39 |
| Related compounds | |
| Other anions | Cobalt(II) chloride Cobalt(II) bromide Cobalt(II) iodide |
| Other cations | Iron(II) hydroxide Nickel(II) hydroxide Copper(II) hydroxide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Cobalt(II) hydroxide or cobaltous hydroxide is the inorganic compound with the formula CoOH)2. It is a rose-red powder. An unstable blue form, has also been reported. It is most used as a drying agent for paints, varnishes, and inks, in the preparation of other cobalt compounds, as a catalyst and in the manufacture of battery electrodes.
Related pages
Images for kids
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Cobalt hydroxide nanotubes. Scale bars: (a,b) 500 nm, inset 200 nm; (c,e) 50 nm; (d) 100 nm.
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Cobalt(II) hydroxide Facts for Kids. Kiddle Encyclopedia.