Chromium(III) bromide
| Names | |
|---|---|
| IUPAC name
Chromium(III) bromide | |
Other names
| |
| Identifiers | |
| |
3D model (JSmol) |
|
| ChemSpider | |
| ECHA InfoCard | 100.030.068 |
| EC Number |
|
PubChem CID |
|
| UNII | |
CompTox Dashboard (EPA) |
|
| |
| |
| Properties | |
| CrBr3 | |
| Molar mass | 291.708 g·mol−1 |
| Appearance | Black lustrous crystals; green in transmitted light, reddish in reflected light |
| Density | 4.25 g/cm3 |
| Melting point | 1,130 °C (2,070 °F; 1,400 K) (anhydrous) 79 °C (hexahydrate) |
| anhydrous: insoluble in cold water, soluble with addition of Chromium(II) ion salts, soluble in hot water; hexahydrate: highly soluble | |
| Structure | |
| trigonal | |
| Hazards | |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 1 mg/m3 |
REL (Recommended) |
TWA 0.5 mg/m3 |
IDLH (Immediate danger) |
250 mg/m3 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Chromium(III) bromide is an inorganic compound with the chemical formula CrBr3. It is a dark colored solid that appears green in transmitted light but red with reflected light. It is used as a precursor to catalysts for the oligomerization of ethylene.