Beryllium carbide
| Names | |
|---|---|
| IUPAC name
Beryllium carbide
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| Identifiers | |
506-66-1  |
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| ChemSpider | 61480  |
| EC Number | 208-050-7 |
| Jmol 3D model | Interactive image Interactive image |
| PubChem | 68173 |
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| Properties | |
| CBe2 | |
| Molar mass | 30.04 g·mol−1 |
| Appearance | Yellow crystals |
| Odor | odorless |
| Density | 1.90 g cm−3 (at 15 °C) |
| Melting point | 2,100 °C (3,810 °F; 2,370 K) (decomposes) |
| decomposes | |
| Vapor pressure | {{{value}}} |
| Related compounds | |
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Related compounds
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Carbon dioxide |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 verify (what is ?) |
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| Infobox references | |
Beryllium carbide, or Be2C, is a metal carbide. Similar to diamond, it is a very hard compound.[1]
Preparation
Beryllium carbide is prepared by heating the elements beryllium and carbon at elevated temperatures (above 900°C). It also may be prepared by reduction of beryllium oxide with carbon at a temperature above 1,500°C:
- 2BeO + 3C → Be2C + 2CO
Beryllium carbide decomposes very slowly in water:
- Be2C + 2H2O → 2BeO + CH4
The rate of decomposition is faster in mineral acids with evolution of methane.
- Be2C + 4 H+ → 2 Be2+ + CH4
However, in hot concentrated alkali the reaction is very rapid, forming alkali metal beryllates and methane:
- Be2C + 4OH− → 2 BeO22− + CH4
See also
References
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<references />, or <references group="..." />External links
- MATERIAL SAFETY DATA SHEET
- Encyclopædia Britannica
- Electrochemical Society article
- ASC website
- article in Nature
- NIST government website
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This inorganic compound–related article is a stub. You can help Wikipedia by expanding it. |
- ↑ Beryllium Carbide Info American Elements Retrieved June 11, 2009.
