Cobalt(II,III) oxide: Difference between revisions
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! {{chembox header}} | Cobalt(II) oxide <!-- replace if not identical with the article name --> | |||
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| align="center" colspan="2" bgcolor="#ffffff" | [[Image:Cobalt(II) oxide.jpg|200px|Cobalt(II,III) oxide]] <!-- replace if not identical with the pagename --> | |||
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! {{chembox header}} | General | |||
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| [[IUPAC nomenclature|Systematic name]] | |||
| Cobalt(II,III) Oxide | |||
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| Other names | |||
| Cobalto-Cobaltic Oxide,<br />Tricobalt Tetraoxide,<br />tricobalt tetroxide | |||
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| [[Chemical formula|Molecular formula]] | |||
| Co<sub>3</sub>O<sub>4</sub> | |||
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| [[Molar mass]] | |||
| 240.80 g/mol | |||
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| Appearance | |||
| A gray, green, red, or black powder | |||
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| [[CAS registry number|CAS number]] | |||
| 1308-06-1 | |||
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! {{chembox header}} | Properties | |||
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| [[Density]] and [[Phase (matter)|phase]] | |||
| 6.1 g/cm<sup>3</sup> | |||
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| [[Solubility]] in [[Water (molecule)|water]] | |||
| practically insoluble in water | |||
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<!-- | Other solvents e.g. [[ethanol]], [[acetone]] --> | |||
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| [[Melting point]] | |||
| 895°C (1168 K) <!-- (mention any decomposition) --> | |||
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| [[Boiling point]] | |||
| ?°C (? K) | |||
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! {{chembox header}} | Hazards <!-- Summary only- MSDS entry provides more complete information --> | |||
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| [[Material safety data sheet|MSDS]] | |||
|(Use CAS#) [http://www.fisher.co.uk/techzone/msds.htm Fisher Scientific] | |||
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| Main [[Worker safety and health|hazard]]s | |||
| Respiratory tract inflammation <br/> possibly carcinogenic | |||
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| [[NFPA 704]] | |||
| {{NFPA 704 | Health=2 }} | |||
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| [[Risk and Safety Statements|R/S statement]] | |||
| [[List of R-phrases|R]]: 22 43 50-53 [[List of S-phrases|S]]: (2-)24-37-60-61 | |||
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| [[RTECS]] number | |||
| GG2500000 | |||
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! {{chembox header}} | Related compounds | |||
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| Other [[Ion|anion]]s <!-- please omit if not applicable --> | |||
| [[Cobalt(II) carbonate]]<br />[[Cobalt(II) nitrate]], [[Cobalt(II) chloride]] | |||
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| Other [[Ion|cation]]s <!-- please omit if not applicable --> | |||
| [[Iron(III) oxide]], [[Iron(II) oxide]]<br />[[Cobalt(II) oxide]] | |||
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| Related compounds | |||
| [[Cobalt(III) oxide]] | |||
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| {{chembox header}} | <small>Except where noted otherwise, data are given for<br /> materials in their [[standard state|standard state (at 25°C, 100 kPa)]]<br />[[wikipedia:Chemical infobox|Infobox disclaimer and references]]</small> | |||
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== Summary == | == Summary == | ||
Revision as of 10:25, 18 April 2007
| Template:Chembox header | Cobalt(II) oxide | |
|---|---|
| Cobalt(II,III) oxide | |
| Template:Chembox header | General | |
| Systematic name | Cobalt(II,III) Oxide |
| Other names | Cobalto-Cobaltic Oxide, Tricobalt Tetraoxide, tricobalt tetroxide |
| Molecular formula | Co3O4 |
| Molar mass | 240.80 g/mol |
| Appearance | A gray, green, red, or black powder |
| CAS number | 1308-06-1 |
| Template:Chembox header | Properties | |
| Density and phase | 6.1 g/cm3 |
| Solubility in water | practically insoluble in water |
| Melting point | 895°C (1168 K) |
| Boiling point | ?°C (? K) |
| Template:Chembox header | Hazards | |
| MSDS | (Use CAS#) Fisher Scientific |
| Main hazards | Respiratory tract inflammation possibly carcinogenic |
| NFPA 704 | Template:NFPA 704 |
| R/S statement | R: 22 43 50-53 S: (2-)24-37-60-61 |
| RTECS number | GG2500000 |
| Template:Chembox header | Related compounds | |
| Other anions | Cobalt(II) carbonate Cobalt(II) nitrate, Cobalt(II) chloride |
| Other cations | Iron(III) oxide, Iron(II) oxide Cobalt(II) oxide |
| Related compounds | Cobalt(III) oxide |
| Template:Chembox header | Except where noted otherwise, data are given for materials in their standard state (at 25°C, 100 kPa) Infobox disclaimer and references | |
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Summary
Cobalt(II,III) oxide is the most prevalent of cobalt's various oxides. The oxide is typically found in ores alongside containing nickel, arsenic, sulfur, and manganese. These ores can be found in great quantities in Canada, Southern Africa, and Morocco among other locales.
This oxide has a gunmetal gray appearance and is typically distributed in a powdered form.
Derivative Compounds
Reactions of Cobalt(II,III) oxide can yield other oxides with similar characteristics:
When heated in the presence of excess oxygen:
- Co3O4(s) + O2(g) → 3 Co2O3(s)
The reaction yields Cobalt(III) Oxide.