Arsenic tribromide
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Arsenic tribromide is an inorganic compound with the formula AsBr3, it is a bromide of arsenic. Arsenic is a chemical element that has the symbol As and atomic number 33. This pyramidal molecule is the only known binary arsenic bromide. AsBr3 is noteworthy for its very high refractive index of approximately 2.3. It also has a very high diamagnetic susceptibility.[2] The compound exists as colourless deliquescent crystals that fume in moist air.
Quick Facts Names, Identifiers ...
Names | |
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Preferred IUPAC name
Arsenic tribromide | |
Systematic IUPAC name
Tribromoarsane | |
Other names
Arsenic(III) bromide Arsenous bromide, Arsenicum Bromatum, Tribromoarsine | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.029.143 |
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 | |
AsBr3 | |
Molar mass | 314.634 g/mol |
Appearance | white to pale yellow crystalline solid |
Density | 3.54 g/cm3 |
Melting point | 31.1 °C (88.0 °F; 304.2 K) |
Boiling point | 221 °C (430 °F; 494 K) |
soluble, partial hydrolysis indicated by fumes | |
-106.0·10−6 cm3/mol | |
Refractive index (nD) |
2.3 |
Hazards | |
NIOSH (US health exposure limits): | |
PEL (Permissible) |
[1910.1018] TWA 0.010 mg/m3[1] |
REL (Recommended) |
Ca C 0.002 mg/m3 [15-minute][1] |
IDLH (Immediate danger) |
Ca [5 mg/m3 (as As)][1] |
Related compounds | |
Related compounds |
Phosphorus tribromide arsenic trichloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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