MF: BBr₃
MW: 250.52
mp : -46 °C(lit.)
bp : -90 °C
density : 2.60 g/mL at 20 °C(lit.)
vapor density : 8.6 (vs air)
vapor pressure : 40 mm Hg ( 14 °C)
Fp : 30 °F
storage temp. : Poison room
color : colorless
Sensitive : Moisture Sensitive 
IUPAC Name: tribromoborane  
Storage temp: Poison room
Sensitive: Moisture Sensitive
Stability: Stable, but reacts violently with water
Appearance: clear to amber liquid with a pungent odour
Product Categories: Inorganics;Piperazine derivates;Deprotecting Reagents;Others;Protection and Derivatization
Synonyms of Boron tribromide (10294-33-4): BBr3 ; Borane,tribromo- ; Boron,tribromo- ; boronbromide(bbr3) ; tribromo-boran ; tribromoborane ; tribromoboron ; tribromo-Boron 
Molecular Structure of Boron tribromide (10294-33-4):

 Boron tribromide (10294-33-4) is commercially available and is a strong Lewis acid. It is an excellent demethylating or dealkylating agent for ethers, often in the production of pharmaceuticals. Additionally, it also finds applications in olefin polymerization and in Friedel-Crafts chemistry as a Lewis acid catalyst. The electronics industry uses boron tribromide as a boron source in pre-deposition processes for doping in the manufacture of semiconductors.

 Boron tribromide (10294-33-4) is used as intermingle source in semiconductor silicon; extracting high-purity boron and organic boron compound; a source in optical fibre.

The first synthesis was done by M. Poggiale in 1846 by reacting boron trioxide with carbon and bromine at high temperatures:
B₂O₃ + 3 C + 3 Br₂ → 2 BBr₃ + 3 CO
An improvement of this method was developed by F. W?hler and Deville in 1857. By starting from amorphous boron the reaction temperatures are lower and no carbon monoxide is produced
2 B + 3 Br₂ → 2 BBr₃ 

RTECS#: CAS# 142-82-5: MI7700000
CAS# 10294-33-4: ED7400000
LD50/LC50: RTECS:
CAS# 142-82-5: Inhalation, rat: LC50 = 103 gm/m3/4H;
RTECS:
CAS# 10294-33-4:.
Carcinogenicity: Heptane (n-) - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.
Boron tribromide (10294-33-4)  - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.
Other: See actual entry in RTECS for complete information.

Hazard Codes:T+CFN
Risk Statements: 14-26/28-35-40-62-11-67-65-50/53 
R14: Reacts violently with water
R26/28: Very toxic by inhalation and if swallowed
R35: Causes severe burns
R40: Limited evidence of a carcinogenic effect
R62: Risk of impaired fertility
R11: Highly flammable
R67: Vapours may cause drowsiness and dizziness
R65: Harmful: may cause lung damage if swallowed
R50/53: Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety Statements: 9-26-28-36/37/39-45-23-33-16-62-61-60 
S9: Keep container in a well-ventilated place 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S28: After contact with skin, wash immediately with plenty of soap-suds
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S23: Do not breathe vapour
S33: Take precautionary measures against static discharges
S16: Keep away from sources of ignition
S62: If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label
S61: Avoid release to the environment. Refer to special instructions / safety data sheets
S60: This material and its container must be disposed of as hazardous waste
RIDADR: UN 3390 6.1/PG 1
WGK Germany: 3
RTECS: ED7400000
F: 10-21
HazardClass: 8
PackingGroup: I