Copper(II) bromide

Copper (II) bromide

Anhydrous

Tetrahydrate
Names
Other names
Cupric bromide
Copper dibromide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.243 Edit this at Wikidata
EC Number
  • 232-167-2
UNII
  • InChI=1S/2BrH.Cu/h2*1H;/q;;+2/p-2 checkY
    Key: QTMDXZNDVAMKGV-UHFFFAOYSA-L checkY
  • InChI=1/2BrH.Cu/h2*1H;/q;;+2/p-2
    Key: QTMDXZNDVAMKGV-NUQVWONBAD
  • [Cu+2].[Br-].[Br-]
Properties
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)
55.7 g/100 mL (20 °C)
Solubility Soluble in alcohol, acetone, ammonia, insoluble in benzene, ether, ethyl ether, sulfuric acid
+685.5·10−6 cm3/mol
Structure
monoclinic
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
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).
checkY verify (what is checkY☒N ?)

Copper(II) bromide (CuBr2) 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.

  1. ^ a b c 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.