Copper chromite

Copper chromite
Identifiers
CAS Number	12053-18-8 ; CuCrO2: 12017-79-7;
3D model (JSmol)	Interactive image;
ChemSpider	2341215; CuCrO2: 57449068;
ECHA InfoCard	100.031.806
EC Number	235-000-1; CuCrO2: 234-627-8;
PubChem CID	3084101; CuCrO2: 44150493;
UNII	10A808NO02 ;
CompTox Dashboard (EPA)	DTXSID60152897 ;
	InChI Key: JGDFBJMWFLXCLJ-UHFFFAOYSA-N; InChI=1S/2Cr.2Cu.5O;
	SMILES O=[Cr]O[Cr]=O.O=[Cu].O=[Cu];
Properties
Chemical formula	Cu2Cr2O5
Molar mass	311.0812 g/mol
Appearance	grey powder
Density	5.42 g/cm3
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). Infobox references

Copper chromite often refers to inorganic compounds with the formula Cu₂Cr₂O_x. They are black solids. Cu₂Cr₂O₄ is a well-defined material. The other copper chromite often is described as Cu₂Cr₂O₅. It is used to catalyze reactions in organic chemistry.^[3]

^ Dollase, W. A.; O'Neill, H. St. C. (1997). "The Spinels CuCr₂O₄and CuRh₂O₄". Acta Crystallographica Section C Crystal Structure Communications. 53 (6): 657–659. Bibcode:1997AcCrC..53..657D. doi:10.1107/S0108270197000486.
^ ^a ^b ^c NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).
^ Cladingboel, D. E. "Copper Chromite" in Encyclopedia of Reagents for Organic Synthesis 2001 John Wiley & Sons. doi:10.1002/047084289X.rc221

[1] Dollase, W. A.; O'Neill, H. St. C. (1997). "The Spinels CuCr₂O₄and CuRh₂O₄". Acta Crystallographica Section C Crystal Structure Communications. 53 (6): 657–659. Bibcode:1997AcCrC..53..657D. doi:10.1107/S0108270197000486.

[PGCH-2] NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).

[3] Cladingboel, D. E. "Copper Chromite" in Encyclopedia of Reagents for Organic Synthesis 2001 John Wiley & Sons. doi:10.1002/047084289X.rc221

[1]

[2]

[3]

Identifiers

CAS Number	12053-18-8^Y CuCrO₂: 12017-79-7
3D model (JSmol)	Interactive image
ChemSpider	2341215 CuCrO₂: 57449068
ECHA InfoCard	100.031.806
EC Number	235-000-1 CuCrO₂: 234-627-8
PubChem CID	3084101 CuCrO₂: 44150493
UNII	10A808NO02^Y
CompTox Dashboard (EPA)	DTXSID60152897
InChI Key: JGDFBJMWFLXCLJ-UHFFFAOYSA-N InChI=1S/2Cr.2Cu.5O
SMILES O=[Cr]O[Cr]=O.O=[Cu].O=[Cu]
Properties
Chemical formula	Cu₂Cr₂O₅
Molar mass	311.0812 g/mol
Appearance	grey powder
Density	5.42 g/cm³^[1]
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 mg/m³ (as Cu)^[2]
REL (Recommended)	TWA 1 mg/m³ (as Cu)^[2]
IDLH (Immediate danger)	TWA 100 mg/m³ (as Cu)^[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references