Product Name

  • Name

    Boron tribromide

  • EINECS 233-657-9
  • CAS No. 10294-33-4
  • Article Data109
  • CAS DataBase
  • Density 2.782 g/cm3
  • Solubility Reacts with water.
  • Melting Point -46 °C(lit.)
  • Formula BBr3
  • Boiling Point 91.3 °C at 760 mmHg
  • Molecular Weight 250.523
  • Flash Point 30°F
  • Transport Information UN 3390 6.1/PG 1
  • Appearance clear to amber liquid with a pungent odour
  • Safety 9-26-28-36/37/39-45-23-33-16-62-61-60
  • Risk Codes 14-26/28-35-40-62-11-67-65-50/53
  • Molecular Structure Molecular Structure of 10294-33-4 (Boron tribromide)
  • Hazard Symbols VeryT+, CorrosiveC, FlammableF, DangerousN
  • Synonyms Boronbromide (BBr3) (8CI);Boron bromide;Boron(III) bromide;Tribromoborane;Tribromoboron;Borane, tribromo-;
  • PSA 0.00000
  • LogP 2.15600

Synthetic route

pentaborane(9)

pentaborane(9)

diboron tetrabromide
14355-29-4

diboron tetrabromide

A

1-(dibromoboryl)pentaborane

1-(dibromoboryl)pentaborane

B

boron tribromide
10294-33-4

boron tribromide

C

dibromoborane
13709-65-4

dibromoborane

Conditions
ConditionsYield
In neat (no solvent) Teflon-valve-equipped standard vacuum line or a nitrogen-filled glovebox;excess B5H9;pentaborane, B2Br4 separately condensed in the reactor, after 20 min at room temp., vessel cooled to -10 ° C,; over course of the following 10 h,all volatile material removed,reactor warmed to room temp.,all volatile material at room temp. were removed,BBr2B5H8 extd. with CH2Cl2, yield:80% on basis of amt. of B2Br4 employed, 86% on basis of unrecovered B5H9;A 80%
B n/a
C n/a
boron

boron

bromine
7726-95-6

bromine

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
boron is mixed with ca. 9 w % Mg, in H2 atmosphere;70%
In not given kept over liq. Hg for 48 h; distd. (vac., room temp.);57.6%
at red heat; in H2 atmosphere;40%
boron trifluoride
7637-07-2

boron trifluoride

aluminium bromide
7727-15-3

aluminium bromide

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
with excess of BF3; addn. of Al to depress formation of Br2; addn. of Hg to get rid of Br2;70%
with excess of BF3; addn. of Al to depress formation of Br2; addn. of Hg to get rid of Br2;70%
BBr3*2(o-nitrotoluene)

BBr3*2(o-nitrotoluene)

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
In neat (no solvent) byproducts: o-CH3C6H4NO2; decompn. reaction immediately;50%
BBr3*3C6H5NO2

BBr3*3C6H5NO2

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
In neat (no solvent) byproducts: C6H5NO2; decompn. reaction immediately;50%
diboron tetrabromide
14355-29-4

diboron tetrabromide

tribromofluoromethane
353-54-8

tribromofluoromethane

A

closo-B9Br9
12589-31-0

closo-B9Br9

B

boron trifluoride
7637-07-2

boron trifluoride

C

boron tribromide
10294-33-4

boron tribromide

D

diboron tetrafluoride
13965-73-6

diboron tetrafluoride

Conditions
ConditionsYield
B2Br4 and CFBr3 were reacted in a NMR-tube at ambient temp. for 3,75 h; products detected by (19)F- and (11)B-NMR, CBr4 by (13)C-NMR;A 2%
B 7%
C 2%
D 39%
aluminium bromide
7727-15-3

aluminium bromide

potassium tetrafluoroborate
14075-53-7

potassium tetrafluoroborate

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
30%
30%
BBr3*Cl3CCOOC2H5
856317-96-9

BBr3*Cl3CCOOC2H5

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
In neat (no solvent) byproducts: Cl3CCOOC2H5; decompn. reaction immediately;25%
diboron tetrabromide
14355-29-4

diboron tetrabromide

carbon tetrabromide
558-13-4

carbon tetrabromide

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
Vac.-distn. of B2Br4 to CBr4, heating in an oil-bath (96°C, 5.75 h).; Monitored by (11)B-NMR.;8.6%
boron(III) sulfide

boron(III) sulfide

bromine
7726-95-6

bromine

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
heating of B2S3 in Br2 vapour;
boron

boron

1,2,3-tribromopropane
96-11-7

1,2,3-tribromopropane

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
250 °C in reaction tube;
at 250°C in sealed tube;
at 250°C in sealed tube;
boron trioxide

boron trioxide

phosphorus trichloride dibromide
13510-40-2

phosphorus trichloride dibromide

boron tribromide
10294-33-4

boron tribromide

boron trioxide

boron trioxide

bromine
7726-95-6

bromine

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
With coal 250°C; fractionated distn.;
boron trioxide

boron trioxide

bromine
7726-95-6

bromine

pyrographite
7440-44-0

pyrographite

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
byproducts: CO; glowed B2O3-C mixt. is treated with Br2;
boron trioxide

boron trioxide

sodium bromide
7647-15-6

sodium bromide

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
800-1000°C;
boron trioxide

boron trioxide

phosphorus pentabromide
7789-69-7

phosphorus pentabromide

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
140 °C, reaction tube;
boron

boron

bromine
7726-95-6

bromine

chlorine
7782-50-5

chlorine

A

boron trichloride
10294-34-5

boron trichloride

B

boron tribromide
10294-33-4

boron tribromide

iron boride

iron boride

bromine
7726-95-6

bromine

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
0%
diborane
19287-45-7

diborane

A

bromodiborane
23834-96-0

bromodiborane

B

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
With bromine at 100°C in light;A >99
B n/a
With bromine at room temperature in light;
With hydrogen bromide; aluminium bromide at 80-90 °C;
boron

boron

magnesium
7439-95-4

magnesium

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
With bromine at moderate temp.;
boron

boron

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
With C2H4Br2 at 250°C in sealed tube;
With bromine at 700°C, or at red heat;
With C2H4Br2 at 250°C in sealed tube;
boron

boron

ethylene dibromide
106-93-4

ethylene dibromide

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
250 °C in reaction tube;
hydrogen cyanide; compound with boron bromide

hydrogen cyanide; compound with boron bromide

A

hydrogen cyanide
74-90-8

hydrogen cyanide

B

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
decompn. by moisture of air;
decompn. by moisture of air;
chloroseleniumtetrabromoborate
4262-75-3

chloroseleniumtetrabromoborate

A

selenium
7782-49-2

selenium

B

boron tribromide
10294-33-4

boron tribromide

Conditions
ConditionsYield
byproducts: CH3Br; decompn. above 66°C;
mercury bis(trifluoromethanethiolate)
21259-75-6

mercury bis(trifluoromethanethiolate)

boron tribromide
10294-33-4

boron tribromide

tris(trifluoromethylsulfanyl)borane
36884-78-3

tris(trifluoromethylsulfanyl)borane

Conditions
ConditionsYield
In further solvent(s) in 2-methylbutane, -196 to +25°C;100%
95%
95%
zirconocene dichloride
1291-32-3

zirconocene dichloride

boron tribromide
10294-33-4

boron tribromide

bis(cyclopentadienyl)dibromozirconium

bis(cyclopentadienyl)dibromozirconium

Conditions
ConditionsYield
In diethyl ether (π-C5H5)2ZrCl2/BBr3 (molar ratio: 3:2);;100%
In diethyl ether (π-C5H5)2ZrCl2/BBr3 (molar ratio: 3:2);;100%
nitrido(tetra-tert-butylphthalocyaninato)rhenium(V)
158789-52-7

nitrido(tetra-tert-butylphthalocyaninato)rhenium(V)

boron tribromide
10294-33-4

boron tribromide

Re(tetra-tert-butylphthalocyaninato)(NBBr3)

Re(tetra-tert-butylphthalocyaninato)(NBBr3)

Conditions
ConditionsYield
In dichloromethane addn. of BBr3 to soln. of rhenium complex at 0°C, 0°C (6 h); removement of solvent (vacuum);100%
nitrido(octa-n-pentylphthalocyaninato)rhenium(V)

nitrido(octa-n-pentylphthalocyaninato)rhenium(V)

boron tribromide
10294-33-4

boron tribromide

Re(octa-n-pentylphthalocyaninato)(NBBr3)

Re(octa-n-pentylphthalocyaninato)(NBBr3)

Conditions
ConditionsYield
In dichloromethane addn. of BBr3 to soln. of rhenium complex at 0°C, 0°C (6 h); removement of solvent (vacuum);100%
(C5Me5)Fe(CO)2SiMe2Ph
745811-87-4

(C5Me5)Fe(CO)2SiMe2Ph

boron tribromide
10294-33-4

boron tribromide

(C5Me5)Fe(CO)2SiBrMePh
745811-89-6

(C5Me5)Fe(CO)2SiBrMePh

Conditions
ConditionsYield
In toluene byproducts: MeBBr2; under inert atm.; BBr3 was added dropwise to a toluene soln. of Fe-complex at room temp., the mixt. was stirred at room temp. for 6 h; evapd., hexane was added, filtd., filtrate evapd.; elem. anal.;100%
In benzene-d6 byproducts: MeBBr2; 1 equiv. of BBr3, 20°C, 1 h, inert atm.; not isolated; detd. by (1)H NMR spectroscopy;
(C5Me5)Fe(CO)2SiMe2Ph
745811-87-4

(C5Me5)Fe(CO)2SiMe2Ph

boron tribromide
10294-33-4

boron tribromide

(C5Me5)Fe(CO)2SiBr2Ph
745811-92-1

(C5Me5)Fe(CO)2SiBr2Ph

Conditions
ConditionsYield
In toluene byproducts: MeBBr2; under inert atm.; BBr3 was added dropwise to a toluene soln. of Fe-complex at room temp., the mixt. was stirred for 24 h at 80°C; evapd., tolyene was added, filtd., filtrate evapd.; elem. anal.;100%
6-methoxy-1-phenyl-1H-indazole

6-methoxy-1-phenyl-1H-indazole

boron tribromide
10294-33-4

boron tribromide

1-phenyl-1H-indazol-6-ol

1-phenyl-1H-indazol-6-ol

Conditions
ConditionsYield
In dichloromethane at 20℃; for 16h; Cooling with ice;100%
1,3,5-tris(trimethylsilyl)benzene
5624-60-2

1,3,5-tris(trimethylsilyl)benzene

water
7732-18-5

water

boron tribromide
10294-33-4

boron tribromide

benzene-1,3,5-triyltriboronic acid

benzene-1,3,5-triyltriboronic acid

Conditions
ConditionsYield
Stage #1: 1,3,5-tris(trimethylsilyl)benzene; boron tribromide at 100℃; for 4h; Inert atmosphere;
Stage #2: water In hexane at 0℃;
100%
Stage #1: 1,3,5-tris(trimethylsilyl)benzene; boron tribromide at 100℃; for 4h; Inert atmosphere;
Stage #2: water In hexane at 0℃;
99%
C16H14S2Si

C16H14S2Si

boron tribromide
10294-33-4

boron tribromide

C14H8BBrS2

C14H8BBrS2

Conditions
ConditionsYield
In dichloromethane at -40 - 20℃;100%
tris(dimethylamino)borane
4375-83-1

tris(dimethylamino)borane

boron tribromide
10294-33-4

boron tribromide

bromobis(dimethylamino)borane
6990-27-8

bromobis(dimethylamino)borane

Conditions
ConditionsYield
In pentane at -40 - 20℃; for 2h; Inert atmosphere;99%
In pentane at -40°C to -50°C;85%
In pentane at -40°C to -50°C;85%
In pentane -50 - -40°C, 2 mol BBr3;
80°C;>99
2,4,6-triethyl-borazine
7443-22-3

2,4,6-triethyl-borazine

boron tribromide
10294-33-4

boron tribromide

A

2,4,6-tribromo-cyclotriborazane
13703-88-3

2,4,6-tribromo-cyclotriborazane

B

Br2(CH3CH2)B3N3H3
136237-57-5

Br2(CH3CH2)B3N3H3

Conditions
ConditionsYield
In dichloromethane addn. of BBr3 to a stirred soln. of the borazine in CH2Cl2 at -10°C over 1 h, warming to room temp., refluxing for 1 h; filtn., evapn. of volatiles under reduced pressure, sublimation under vacuum (40-50°C bath temp.), elem. anal.;A n/a
B 99%
tricarbonyl(η6-α-methylbenzyl methyl ether) chromium(0)
177187-93-8, 90026-95-2, 76126-80-2

tricarbonyl(η6-α-methylbenzyl methyl ether) chromium(0)

boron tribromide
10294-33-4

boron tribromide

(OC)3CrC6H5CH(CH3)Br
191352-86-0

(OC)3CrC6H5CH(CH3)Br

Conditions
ConditionsYield
In dichloromethane stirring at -78°C for 1 h, quenching (satd. aq. NaHCO3), warming to room temp.; addn. of H2O, extn. (Et2O), drying (MgSO4), filtration, concn.;99%
bis(benzyl-tert-butylamino)boron fluoride
106367-62-8

bis(benzyl-tert-butylamino)boron fluoride

boron tribromide
10294-33-4

boron tribromide

{bis(benzyl-tert-butylamino)boron}tetrabromo borate
106542-71-6

{bis(benzyl-tert-butylamino)boron}tetrabromo borate

Conditions
ConditionsYield
In dichloromethane react. in dry N2 or in vac. with exclosure of moisture; BBr3 was added to a soln. of the B-compound in CH2Cl2 with stirring at -50°C; the soln. was allowed to warm to 0°C; it was stirred for 15 min at this temp.;; evapd. in vac., volatiles condensed at -196°C; product remains as the residue; elem. anal.;;99%
boron tribromide
10294-33-4

boron tribromide

dimethyl amine
124-40-3

dimethyl amine

(bisdimethylamine)dibromoboronium(+1) bromide
14215-61-3

(bisdimethylamine)dibromoboronium(+1) bromide

Conditions
ConditionsYield
In chloroform reaction at -70°C;;99%
In chloroform reaction at -70°C;;99%
In chloroform>99
In chloroform>99
dodecacarbonyl triosmium
15696-40-9

dodecacarbonyl triosmium

boron tribromide
10294-33-4

boron tribromide

2Os(2+)*6CO*4Br(1-)=Os2(CO)6Br4

2Os(2+)*6CO*4Br(1-)=Os2(CO)6Br4

Conditions
ConditionsYield
With carbon monoxide; hydrogen In neat (no solvent) A sealed tube contained Os3(CO)12, BBr3 and 630 torr (at -196°C)of 3:1 H2:CO gas mixt. was heated at 150°C for 1 h, cooled;; purified by sublimation at 190°C or by treatment with H2O-CH2Cl2and recrystn. from CH2Cl2; elem. anal.;;99%
(benzyl alcohol)tricarbonylchromium(0)
12116-45-9

(benzyl alcohol)tricarbonylchromium(0)

boron tribromide
10294-33-4

boron tribromide

[Cr(η6-C6H5CH2Br)(CO)3]
191352-85-9

[Cr(η6-C6H5CH2Br)(CO)3]

Conditions
ConditionsYield
In dichloromethane stirring at -78°C for 1 h, quenching (satd. aq. NaHCO3), warming to room temp.; addn. of H2O, extn. (Et2O), drying (MgSO4), filtration, concn.;99%
In dichloromethane BBr3 in CH2Cl2 was added to a soln. of complex in CH2Cl2 under N2 at -78°C, stirred for 1.5-3 h; satd. aq. NaHCO3 was added, warmed to room temp., H2O was added, the organic layer was sepd., dried over MgSO4, filtered, the solvent was removed under reduced pressure;70%
(η5-C5Me5)Fe(CO)2SiMe3

(η5-C5Me5)Fe(CO)2SiMe3

boron tribromide
10294-33-4

boron tribromide

(C5Me5)Fe(CO)2SiBrMe2
745811-88-5

(C5Me5)Fe(CO)2SiBrMe2

Conditions
ConditionsYield
In hexane byproducts: MeBBr2; under inert atm.; BBr3 was added dropwise to a hexane soln. of Fe-complex at room temp., the mixt. was stirred vigorously for 1 h; evapd., hexane was added, filtd., filtrate evapd.; elem. anal.;99%
In benzene-d6 byproducts: MeBBr2; 1 equiv. of BBr3, 20°C, 0,5 h, inert atm.; not isolated; detd. by (1)H NMR spectroscopy;
[CH3(C6H4)BBr(4,4'-bis(but-3''-enyl)-2,2'-bipyridyl)]Br

[CH3(C6H4)BBr(4,4'-bis(but-3''-enyl)-2,2'-bipyridyl)]Br

triethylsilane
617-86-7

triethylsilane

boron tribromide
10294-33-4

boron tribromide

[CH3(C6H4)BBr(((C5H3N)(CH2)4BBr2)2)](1+)*BBr4(1-) = [CH3(C6H4)BBr(((C5H3N)(CH2)4BBr2)2)]BBr4

[CH3(C6H4)BBr(((C5H3N)(CH2)4BBr2)2)](1+)*BBr4(1-) = [CH3(C6H4)BBr(((C5H3N)(CH2)4BBr2)2)]BBr4

Conditions
ConditionsYield
In dichloromethane under O2-free Ar; soln. of boronium bromide complex (0.75 mmol) and Et3SiH (2.25 mmol) in CH2Cl2 (5 ml) added dropwise to BBr3 (2.25 mmol) in CH2Cl2 (5 ml) (-78°C); warmed to room temp.; pptd. with n-hexane (5 ml);99%
methanol
67-56-1

methanol

N,N-diethyl 10-trimethylsilylphenanthren-9-yl-O-carbamate

N,N-diethyl 10-trimethylsilylphenanthren-9-yl-O-carbamate

boron tribromide
10294-33-4

boron tribromide

9-(N,N-diethyl-O-carbamato)-phenanthren-10-yl-boronic acid

9-(N,N-diethyl-O-carbamato)-phenanthren-10-yl-boronic acid

Conditions
ConditionsYield
In dichloromethane (Ar or N2); addn. of BBr3 to soln of N,N-diethyl 10-trimethylsilylphenanthren-9-yl-O-carbamate in CH2Cl2 at -78°C, stirring at room temp. overnight, addn. of MeOH;99%
(C6F5)2(CH3)2C3HN2Si(CH3)3

(C6F5)2(CH3)2C3HN2Si(CH3)3

boron tribromide
10294-33-4

boron tribromide

(C6F5)2N2(CH3)2C3HBBr2

(C6F5)2N2(CH3)2C3HBBr2

Conditions
ConditionsYield
In hexane; toluene (under Ar, Schlenk); soln. of BBr3 in hexane added to soln. of ligand intoluene at ambient temp., stirred overnight; solvent removed under reduced pressure;99%
2,6-diethyl-4,4-difluoro-1,3,5,7-tetramethyl-8H-4-bora-3a,4a-diaza-s-indacene

2,6-diethyl-4,4-difluoro-1,3,5,7-tetramethyl-8H-4-bora-3a,4a-diaza-s-indacene

boron tribromide
10294-33-4

boron tribromide

4,4-dibromo-2,6-diethyl-1,3,5,7-tetramethyl-8H-4-bora-3a,4a-diaza-s-indacene

4,4-dibromo-2,6-diethyl-1,3,5,7-tetramethyl-8H-4-bora-3a,4a-diaza-s-indacene

Conditions
ConditionsYield
In tetrachloromethane Inert atmosphere;99%
C12H9BrFN

C12H9BrFN

water
7732-18-5

water

boron tribromide
10294-33-4

boron tribromide

C12H8BBrFNO

C12H8BBrFNO

Conditions
ConditionsYield
Stage #1: C12H9BrFN; boron tribromide In dichloromethane at 20℃;
Stage #2: water
99%
C17H16B2N2O4

C17H16B2N2O4

boron tribromide
10294-33-4

boron tribromide

C11H12B2Br2N2O2

C11H12B2Br2N2O2

Conditions
ConditionsYield
In hexane; toluene at -30 - 20℃; for 3h;99%
tetraphenylarsonium tetrachloronitridorhenate
76822-32-7

tetraphenylarsonium tetrachloronitridorhenate

boron tribromide
10294-33-4

boron tribromide

As(C6H5)4(1+)*Br4ReNBBr3(1-) = As(C6H5)4{Br4ReNBBr3}

As(C6H5)4(1+)*Br4ReNBBr3(1-) = As(C6H5)4{Br4ReNBBr3}

Conditions
ConditionsYield
In neat (no solvent) byproducts: BCl3; condensing BBr3 onto the Re-complex in vac.; refluxing for 7 h; evapn. of excess BBr3; drying in vac.; elem. anal.;98.5%
bis(trifluoromethyl)mercury
371-76-6

bis(trifluoromethyl)mercury

boron tribromide
10294-33-4

boron tribromide

boron trifluoride
7637-07-2

boron trifluoride

Conditions
ConditionsYield
In neat (no solvent) (N2); BBr3 was condensed above Hg compd. in an evacuated tube, mixt. was warmed up to room temp. and stirred for 60 min; identified by (19)F- and (11)B-NMR;98%
1,4,6,9-tetraisopropyl-3,8-diethyl-2,7-bis(diethylboryl)-5-stannaspiro[4.4]nona-1,3,6,8-tetraene
135952-85-1

1,4,6,9-tetraisopropyl-3,8-diethyl-2,7-bis(diethylboryl)-5-stannaspiro[4.4]nona-1,3,6,8-tetraene

boron tribromide
10294-33-4

boron tribromide

3,4-diethyl-2,5-diisopropyl-1,6-dibromo-2,3,4,5-tetracarba-nido-hexaborane(6)
172166-31-3

3,4-diethyl-2,5-diisopropyl-1,6-dibromo-2,3,4,5-tetracarba-nido-hexaborane(6)

Conditions
ConditionsYield
In hexane byproducts: EtBBr2, SnBr4; N2-atmosphere; addn. of excess BBr3 to Sn-compd. at -78°C, warming to room temp., stirring for 3 h; filtration, removal of volatiles (vac.), fractional distn.;98%
bis(cyclopentadienyl)hafnium dichloride
12116-66-4

bis(cyclopentadienyl)hafnium dichloride

boron tribromide
10294-33-4

boron tribromide

bis(cyclopentadienyl)hafnium dibromide

bis(cyclopentadienyl)hafnium dibromide

Conditions
ConditionsYield
In dichloromethane (π-C5H5)2HfCl2/BBr3 (molar ratio 3:2); inert atm.; 5 min. in CH2Cl2;;98%
In dichloromethane (π-C5H5)2HfCl2/BBr3 (molar ratio 3:2); inert atm.; 5 min. in CH2Cl2;;98%
trimethylphenylsilane
768-32-1

trimethylphenylsilane

boron tribromide
10294-33-4

boron tribromide

dibromo(phenyl)borane
4151-77-3

dibromo(phenyl)borane

Conditions
ConditionsYield
In neat (no solvent) byproducts: BrSi(CH3)3; BBr3 and C6H5Si(CH3)3 mixed under stirring and cooling (room temp.), 60°C, 1h;98%
In dichloromethane byproducts: BrSi(CH3)3; in inert atmosphere, dropwise addn. of trimethylphenylsilane to a stirred soln. of BBr3 at -78°C, stirring (-78°C, 1 h), slow warming to room temp.; evapn. in vac. at 30°C.;94%
In neat (no solvent) (N2); neat BBr3 added by pipette to neat PhSiMe3 in a Schenk flask; placed in 60 °C oil bath for 4.5 h; volatile components removed by vacuum distillation at room temp.;94%
tetraphosphorus triselenide
1314-86-9

tetraphosphorus triselenide

boron tribromide
10294-33-4

boron tribromide

P4Se3BBr3
366837-16-3

P4Se3BBr3

Conditions
ConditionsYield
In carbon disulfide (N2); P4Se3 in CS2 was added to soln. of BBr3 in CS2 at room temp.; cooled to -78°C; filtered; dried in vac. at room temp.;98%
1,4,6,9-tetrabutyl-3,8-diethyl-2,7-bis(diethylboryl)-5-stannaspiro[4.4]nona-1,3,6,8-tetraene
135952-86-2

1,4,6,9-tetrabutyl-3,8-diethyl-2,7-bis(diethylboryl)-5-stannaspiro[4.4]nona-1,3,6,8-tetraene

boron tribromide
10294-33-4

boron tribromide

1,6-dibromo-2,5-dibutyl-3,4-diethyl-2,3,4,5-tetracarba-nido-hexaborane(6)
172166-32-4

1,6-dibromo-2,5-dibutyl-3,4-diethyl-2,3,4,5-tetracarba-nido-hexaborane(6)

Conditions
ConditionsYield
In hexane byproducts: EtBBr2, SnBr4; N2-atmosphere; addn. of excess BBr3 to Sn-compd. at -78°C, warming to room temp., stirring for 3 h; filtration, removal of volatiles (vac.), fractional distn.;98%

Boron tribromide Chemical Properties

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 Uses

 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.

Boron tribromide Production

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 

Boron tribromide Toxicity Data With Reference

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.

Boron tribromide Safety Profile

Hazard Codes:VeryT+CorrosiveCFlammableFDangerousN
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

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