Copper silicide
| Identifiers | |
|---|---|
3D model (
JSmol ) |
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| ChemSpider | |
ECHA InfoCard
|
100.032.066 |
| EC Number |
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PubChem CID
|
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CompTox Dashboard (EPA)
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| Properties | |
| Cu5Si | |
| Molar mass | 345.8155 g/mol |
| Appearance | silver powder |
| Melting point | 825 °C (1,517 °F; 1,098 K) |
| Hazards | |
| NIOSH (US health exposure limits): | |
PEL (Permissible)
|
TWA 1 mg/m3 (as Cu)[1] |
REL (Recommended)
|
TWA 1 mg/m3 (as Cu)[1] |
IDLH (Immediate danger) |
TWA 100 mg/m3 (as Cu)[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Copper silicide can refer to either Cu4Si[2] or pentacopper silicide, Cu5Si.
Pentacopper silicide is a
ionic compound and an alloy
. This solid crystalline material is a silvery solid that is insoluble in water. It forms upon heating mixtures of copper and silicon.
Applications
Copper silicide
better source needed
]
Copper silicides are invoked in the
methyl chloride to silicon. An illustrative reaction affords the industrially useful dimethyldichlorosilane:[4]
- 2 CH3Cl + Si → (CH3)2SiCl2
References
- ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).
- ^ CRC Handbook of Chemistry and Physics, 49th edition, "Physical constants of inorganic compounds" (p. B-198).
- ^ "Copper silicide passivation for improved reliability - US Patent 6869873". Archived from the original on 2007-09-29. Retrieved 2007-02-10.
- ISBN 978-0-08-037941-8.
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