Phosphorus tribromide
| Names | |
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| IUPAC name
Phosphorus tribromide | |
| Other names
phosphorus(III) bromide, phosphorous bromide, tribromophosphine | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.029.253 |
| EC Number |
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PubChem CID |
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| PBr3 | |
| Molar mass | 270.69 g/mol |
| Appearance | clear, colourless liquid |
| Density | 2.852 g/cm3 |
| Melting point | −41.5 °C (−42.7 °F; 231.7 K) |
| Boiling point | 173.2 °C (343.8 °F; 446.3 K) |
| rapid hydrolysis | |
Refractive index (nD) |
1.697 |
| Viscosity | 0.001302 Pas |
| Structure | |
| trigonal pyramidal | |
| Hazards | |
| GHS labelling: | |
| Danger | |
| H314, H335 | |
| P260, P261, P264, P271, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P363, P403+P233, P405, P501 | |
| NFPA 704 (fire diamond) | |
| Related compounds | |
Other anions |
phosphorus trifluoride phosphorus trichloride phosphorus triiodide |
Other cations |
nitrogen tribromide arsenic tribromide antimony tribromide |
Related compounds |
phosphorus pentabromide phosphorus oxybromide |
| Supplementary data page | |
| Phosphorus tribromide (data page) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Phosphorus tribromide is a colourless liquid with the formula PBr3. The liquid fumes in moist air due to hydrolysis and has a penetrating odour. It is used in the laboratory for the conversion of alcohols to alkyl bromides.