Copper(II) bromide

Copper (II) bromide
	; Anhydrous
	; Tetrahydrate
Names
	Other names Cupric bromide; Copper dibromide
Identifiers
CAS Number	7789-45-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	8395631 ;
ECHA InfoCard	100.029.243
EC Number	232-167-2;
PubChem CID	24611;
UNII	1KC430K0ZN ;
CompTox Dashboard (EPA)	DTXSID7064863 ;
	InChI InChI=1S/2BrH.Cu/h21H;/q;;+2/p-2 Key: QTMDXZNDVAMKGV-UHFFFAOYSA-L ; InChI=1/2BrH.Cu/h21H;/q;;+2/p-2 Key: QTMDXZNDVAMKGV-NUQVWONBAD;
	SMILES [Cu+2].[Br-].[Br-];
Properties
Chemical formula	CuBr2
Molar mass	223.37 g/mol
Appearance	grayish black crystals ; deliquescent
Density	4.710 g/cm3, solid
Melting point	498 °C (928 °F; 771 K)
Boiling point	900 °C (1,650 °F; 1,170 K)
Solubility in water	55.7 g/100 mL (20 °C)
Solubility	Soluble in alcohol, acetone, ammonia, insoluble in benzene, ether, ethyl ether, sulfuric acid
Magnetic susceptibility (χ)	+685.5·10−6 cm3/mol
Structure
Crystal structure	monoclinic
Hazards
NFPA 704 (fire diamond)	2 0 0
	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)
Related compounds
Other anions	Copper(II) fluoride; Copper(II) chloride
Other cations	Copper(I) bromide; Nickel(II) bromide; Zinc bromide; Cadmium bromide; Mercury(II) bromide
	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(II) bromide (Cu Br₂) is a chemical compound that forms an unstable tetrahydrate CuBr₂·4H₂O. It is used in photographic processing as an intensifier and as a brominating agent in organic synthesis.^[2]

It is also used in the copper vapor laser, a class of laser where the medium is copper bromide vapour formed in-situ from hydrogen bromide reacting with the copper discharge tube.^[3] Producing yellow or green light, it is used in dermatological applications.

^ ^a ^b ^c NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).
^ Huang, Jianhui; Macdonald, Simon J. F.; Harrity, Joseph P. A. (2009). "A cycloaddition route to novel triazole boronic esters". Chem. Commun. (4): 436–438. doi:10.1039/b817052e. PMID 19137177.
^ Livingstone, E. S.; Maitland, A. (1991). "A high power, segmented metal, copper bromide laser". Measurement Science and Technology. 2 (11): 1119. Bibcode:1991MeScT...2.1119L. doi:10.1088/0957-0233/2/11/022. ISSN 0957-0233. S2CID 250801465.

[PGCH-1] NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).

[2] Huang, Jianhui; Macdonald, Simon J. F.; Harrity, Joseph P. A. (2009). "A cycloaddition route to novel triazole boronic esters". Chem. Commun. (4): 436–438. doi:10.1039/b817052e. PMID 19137177.

[3] Livingstone, E. S.; Maitland, A. (1991). "A high power, segmented metal, copper bromide laser". Measurement Science and Technology. 2 (11): 1119. Bibcode:1991MeScT...2.1119L. doi:10.1088/0957-0233/2/11/022. ISSN 0957-0233. S2CID 250801465.

[1]

[2]

[3]

Names
Anhydrous
Tetrahydrate
Other names Cupric bromide Copper dibromide
Identifiers
CAS Number	7789-45-9^Y
3D model (JSmol)	Interactive image
ChemSpider	8395631^Y
ECHA InfoCard	100.029.243
EC Number	232-167-2
PubChem CID	24611
UNII	1KC430K0ZN^Y
CompTox Dashboard (EPA)	DTXSID7064863
InChI InChI=1S/2BrH.Cu/h21H;/q;;+2/p-2^Y Key: QTMDXZNDVAMKGV-UHFFFAOYSA-L^Y InChI=1/2BrH.Cu/h21H;/q;;+2/p-2 Key: QTMDXZNDVAMKGV-NUQVWONBAD
SMILES [Cu+2].[Br-].[Br-]
Properties
Chemical formula	CuBr₂
Molar mass	223.37 g/mol
Appearance	grayish black crystals deliquescent
Density	4.710 g/cm³, solid
Melting point	498 °C (928 °F; 771 K)
Boiling point	900 °C (1,650 °F; 1,170 K)
Solubility in water	55.7 g/100 mL (20 °C)
Solubility	Soluble in alcohol, acetone, ammonia, insoluble in benzene, ether, ethyl ether, sulfuric acid
Magnetic susceptibility (χ)	+685.5·10⁻⁶ cm³/mol
Structure
Crystal structure	monoclinic
Hazards
NFPA 704 (fire diamond)	2 0 0
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]
Related compounds
Other anions	Copper(II) fluoride Copper(II) chloride
Other cations	Copper(I) bromide Nickel(II) bromide Zinc bromide Cadmium bromide Mercury(II) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references