Boron tribromide

Boron tribromide
Boron tribromide
Sample of boron tribromide
Names
IUPAC name
Boron tribromide
Other names
Tribromoborane, Boron bromide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.030.585 Edit this at Wikidata
EC Number
  • 233-657-9
RTECS number
  • ED7400000
UNII
UN number 2692
  • InChI=1S/B.3BrH/h;3*1H/q+3;;;/p-3 checkY
    Key: LKBREHQHCVRNFR-UHFFFAOYSA-K checkY
  • InChI=1/BBr3/c2-1(3)4
    Key: ILAHWRKJUDSMFH-UHFFFAOYAA
  • InChI=1/B.3BrH/h;3*1H/q+3;;;/p-3
    Key: LKBREHQHCVRNFR-DFZHHIFOAX
  • BrB(Br)Br
Properties
BBr3
Molar mass 250.52 g·mol−1
Appearance Colorless to amber liquid
Odor Sharp and irritating[1]
Density 2.643 g/cm3
Melting point −46.3 °C (−51.3 °F; 226.8 K)
Boiling point 91.3 °C (196.3 °F; 364.4 K)
Reacts violently with water and other protic solvents
Solubility Soluble in CH2Cl2, CCl4
Vapor pressure 7.2 kPa (20 °C)
1.00207
Viscosity 7.31 x 10−4 Pa s (20 °C)
Thermochemistry
0.2706 J/K
228 J/mol K
-0.8207 kJ/g
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Reacts violently with water, potassium, sodium, and alcohols; attacks metals, wood, and rubber[1]
GHS labelling:
Acute Tox. 2Skin Corr. 1B
Danger
H300, H314, H330 Within the European Union, the following additional hazard statement (EUH014) must also be displayed on labeling: Reacts violently with water.
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
3
0
2
W
Flash point Noncombustible[1]
NIOSH (US health exposure limits):
PEL (Permissible)
 None[1]
REL (Recommended)
 C 1 ppm (10 mg/m3)[1]
IDLH (Immediate danger)
 N.D.[1]
Safety data sheet (SDS) ICSC 0230
Related compounds
Related compounds
 Boron trifluoride
Boron trichloride
Boron triiodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Boron tribromide, BBr3, is a colorless, fuming liquid compound containing boron and bromine. Commercial samples usually are amber to red/brown, due to weak bromine contamination. It is decomposed by water and alcohols.[2]

  1. ^ a b c d e f NIOSH Pocket Guide to Chemical Hazards. "#0061". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ "Boron Tribromide". Toxicologic Review of Selected Chemicals. National Institute for Occupational Safety and Health. 2018-09-21.