Copper(II) bromide
Anhydrous | |
Tetrahydrate | |
| Names | |
|---|---|
| Other names
Cupric bromide Copper dibromide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.029.243 |
| EC Number |
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PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| 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) | |
| 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).
Infobox references | |
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.
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. Producing yellow or green light, it is used in dermatological applications.