Copper silicide

Copper silicide
Identifiers
CAS Number	12159-07-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	29356049;
ECHA InfoCard	100.032.066
EC Number	235-286-8;
PubChem CID	6336988;
CompTox Dashboard (EPA)	DTXSID101014289 ;
	InChI InChI=1S/5Cu.Si Key: JUZTWRXHHZRLED-UHFFFAOYSA-N;
	SMILES [Si].[Cu].[Cu].[Cu].[Cu].[Cu];
Properties
Chemical formula	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)
REL (Recommended)	TWA 1 mg/m3 (as Cu)
IDLH (Immediate danger)	TWA 100 mg/m3 (as Cu)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Copper silicide can refer to either Cu₄Si^[2] or pentacopper silicide, Cu₅Si.

Pentacopper silicide is a binary compound of silicon with copper. It is an intermetallic compound, meaning that it has properties intermediate between an 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.

[1]

[2]

v t e Copper compounds
Cu(0,I)	Cu₅Si
Cu(I)	CuBr CuCN CuCl CuF CuH CuI Cu₂C₂ Cu₂Cr₂O₅ Cu₂O CuOH CuNO₃ Cu₃P Cu₂S CuSCN C₆H₅Cu
Cu(I,II)	Cu₄O₃ Cu₃H₄O₈S₂
Cu(II)	Cu(BF₄)₂ CuBr₂ CuC₂ Cu(CH₃COO)₂ Cu(CF₃COO)₂ Cu(C₃H₅O₃)₂ CuCO₃ Cu₂CO₃(OH)₂ Cu(CN)₂ CuCl₂ / KCuCl₃ / K₂CuCl₄ Cu(ClO₃)₂ Cu(ClO₄)₂ CuF₂ Cu(NO₃)₂ Cu₃(PO₄)₂ Cu₃(BO₃)₂ Cu(N₃)₂ CuC₂O₄ CuO CuO₂ Cu(OH)₂ CuS Cu(SCN)₂ CuSO₄ Cu₃(AsO₄)₂ Cu(C ₁₁H ₂₃COO) ₂ Cu(C₁₇H₃₅COO)₂ CuTe CuTe₂
Cu(III)	K₃CuF₆
Cu(IV)	CuO₂ Cs₂CuF₆

Copper silicide

References

Related Articles

Identifiers
CAS Number	12159-07-8^Y
3D model (JSmol)	Interactive image
ChemSpider	29356049
ECHA InfoCard	100.032.066
EC Number	235-286-8
PubChem CID	6336988
CompTox Dashboard (EPA)	DTXSID101014289
InChI InChI=1S/5Cu.Si Key: JUZTWRXHHZRLED-UHFFFAOYSA-N
SMILES [Si].[Cu].[Cu].[Cu].[Cu].[Cu]
Properties
Chemical formula	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). N verify (what is ^YN ?) Infobox references