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Phosphorus tribromide

Phosphorus tribromide Structure
Phosphorus tribromide structure
CAS No.
7789-60-8
Chemical Name:
Phosphorus tribromide
Synonyms
PBr3;Phosphorous tribromide;tribroMophosphane;tribromophosphine;PHOSPHORUS BROMIDE;Phosphorus(Ⅲ)bromide;extrema[qr];Phosphortribromid;phosphrous broMide;phosphorousbromide
CBNumber:
CB8372891
Molecular Formula:
Br3P
Lewis structure
pbr3 lewis structure
Molecular Weight:
270.69
MDL Number:
MFCD00011436
MOL File:
7789-60-8.mol
MSDS File:
SDS
Last updated:2026-01-13 11:27:06
Product description Number Pack Size Price
Phosphorus tribromide for synthesis 8.22321 50mL $80.6
Phosphorus tribromide for synthesis 8.22321 250ML $370
Phosphorus tribromide 97% 157783 100g $102.6
Phosphorus tribromide 97% 157783 500g $178.6
Phosphorus Tribromide >98.0%(T) P1743 300g $53
More product size
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Phosphorus tribromide Properties

Melting point -41.5 °C (lit.)
Boiling point 175 °C (lit.)
Density 2.88 g/mL at 20 °C (lit.)
vapor density 9.3 (vs air)
vapor pressure 0.27 psi ( 54 °C)
refractive index n20/D 1.697(lit.)
Flash point 172.9°C
storage temp. Store below +30°C.
solubility soluble in Ether,Acetone,Chloroform
form Liquid
color Clear to slightly hazy colorless to yellow or light brown
Specific Gravity 2.88
Odor Irritating odour
Viscosity 15.048mm2/s
Water Solubility reacts
FreezingPoint -40℃
Sensitive Moisture Sensitive
Merck 14,7357
BRN 3903060
Dielectric constant 3.9（20℃）
Stability Stable, but reacts violently with water. Incompatible with moisture, strong bases, strong oxidizing agents, reactive metals, acids, alcohols.
InChI 1S/Br3P/c1-4(2)3
InChIKey IPNPIHIZVLFAFP-UHFFFAOYSA-N
SMILES BrP(Br)Br
LogP 2.394 (est)
CAS DataBase Reference 7789-60-8(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII 58R3866PUA
NIST Chemistry Reference Phosphorus tribromide(7789-60-8)
EPA Substance Registry System Phosphorus tribromide (7789-60-8)
UNSPSC Code 12352307
NACRES NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS05,GHS07
Signal word  Danger
Hazard statements  H314-H335
Precautionary statements  P261-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338
target organs Respiratory system
PPE Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
Hazard Codes  C
Risk Statements  34-37-40-14-67
Safety Statements  26-45-36/37-36/37/39
RIDADR  UN 3264 8/PG 2
WGK Germany  2
RTECS  TH4460000
F  21
TSCA  TSCA listed
HS Code  2812 90 00
HazardClass  8
PackingGroup  II
Storage Class 8A - Combustible corrosive hazardous materials
Hazard Classifications Eye Dam. 1
Skin Corr. 1B
STOT SE 3
Hazardous Substances Data 7789-60-8(Hazardous Substances Data)
Limited Quantities 1.0 L (0.3 gallons) (liquid) or 1 Kg (2.2 lbs) (solid)
Excepted Quantities Not Permitted as Excepted Quantity
NFPA 704
0
3 2
W

Phosphorus tribromide price More Price(29)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.22321 Phosphorus tribromide for synthesis 7789-60-8 50mL $80.6 2025-07-31 Buy
Sigma-Aldrich 8.22321 Phosphorus tribromide for synthesis 7789-60-8 250ML $370 2025-07-31 Buy
Sigma-Aldrich 157783 Phosphorus tribromide 97% 7789-60-8 100g $102.6 2025-07-31 Buy
Sigma-Aldrich 157783 Phosphorus tribromide 97% 7789-60-8 500g $178.6 2025-07-31 Buy
TCI Chemical P1743 Phosphorus Tribromide >98.0%(T) 7789-60-8 300g $53 2025-07-31 Buy
Product number Packaging Price Buy
8.22321 50mL $80.6 Buy
8.22321 250ML $370 Buy
157783 100g $102.6 Buy
157783 500g $178.6 Buy
P1743 300g $53 Buy

Phosphorus tribromide Chemical Properties,Uses,Production

Chemical Properties

Phosphorus tribromide is a colourless liquid(possibly hazy) with the formula PBr3. It fumes in air due to hydrolysis and has a penetrating odour. It is widely used in the laboratory for the conversion of alcohols toalkyl bromides.
Phosphorus tribromide (PBr3) is commonly used in Hell-Volhard-Zelinsky halogenation for the α-bromination of carboxylic acids to form the corresponding acyl bromide. It is also useful for the conversion of primary and secondary alcohols to alkyl bromides.

Uses

Phosphorus tribromide is used mainly for the conversion of alcohols to alkyl bromides and it is used in tests for skin corrosivity. It is used for alkene preparation and it act as a lewis base and a lewis acid. Phosphorus tribromide is used in the manufacture of pharmaceuticals such as alprazolam, methohexital and fenoprofen.
Phosphorus tribromide may be used as a reagent:
In a novel protocol for synthesizing 7-ethoxy-1-(p-ethylphenoxy)-3,7-dimethyl-2-octene, a synthetic juvenile hormone mimic of trans,trans,cis-10,11-epoxy-7-ethyl-3,11-dimethyltrideca-2,6-dienoate.
To synthesize 1,2,3-diazaphosphinane, 1,2,3-thiazaphosphinine and 1,2-azaphosphole bearing a chromone ring.
To synthesize 1-Bromoundec-1-ene from 10-undecen-1-ol.

Uses

Phosphorus(III) bromide is used mainly for the conversion of alcohols to alkyl bromides and it is used in tests for skin corrosivity. It is used for alkene preparation and it act as a lewis base and a lewis acid. It is used as a catalyst for the alpha-bromination of carboxylic acids and used as intermediates in hell-volhard-zelinsky halogenation. Phosphorus tribromide is used in the manufacture of pharmaceuticals such as alprazolam, methohexital and fenoprofen. It is also used as a fire suppression agent.

Preparation

Phosphorus tribromide, PBr3, is most conveniently prepared by reaction between liquid bromine and a solution of white phosphorus in PBr3. In most of its reactions, the tribromide resembles the trichloride although the former has been much less studied and in some cases the products seem to be more complex.

Reactions

Silyl phosphites such as (EtO)2POSiMe3 and (Et3SiO)3P are known. The latter compound can be prepared in 30% yield by reacting phosphorus tribromide with an organosilane in the presence of zinc chloride. Esters of the former type can be made by reaction.
3Et3SiO+PBr3–-(Et3SiO)3+3RBr
Et3SiONa+(EtO)2PCl–-(EtO)2POSiEt3+NaCl)

General Description

A colorless fuming liquid with a pungent odor. Corrosive to metals and tissue. Boiling point 347°F (175°C). Freezing point -40°F (-40°C).

Air & Water Reactions

Fumes in air. Decomposed by water to form phosphoric acid and hydrobromic acid. Reaction with warm water is very rapid and may be violent [Mellor v.8. 1032 1940].

Reactivity Profile

Phosphorus tribromide reacts with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive; the reactions may be violent. Forms complexes with potassium or sodium metal that explode when shocked. Drop wise addition to 3-phenylpropanol caused an explosion when stirring of the mixture was discontinued [Chem. Brit., 1974, 10, 101-102].

Health Hazard

Inhalation causes severe irritation of nose, throat, and lungs. Ingestion causes burns of mouth and stomach. Contact with eyes or skin causes severe burns.

Safety Profile

Probably highly toxic. A corrosive irritant to the eyes, skin, and mucous membranes. Wdl react with water, steam, or acids to produce heat, toxic and corrosive fumes. Violent reaction or ignition with calcium hydroxide + sodium carbonate, phenylpropanol, sulfuric acid, oleum, fluorosulfuric acid, chlorosulfuric acid, 1,1,1 -tris(hydroxymethyl)methane, water, potassium, sodium, RuO4. When heated to decomposition it emits very toxic fumes of Brand POx. See also PHOSPHIDES and BROMIDES.

Purification Methods

It is decomposed by moisture, it should be kept dry and is corrosive. Purify it by distillation through an efficient fractionating column [see Whitmore & Lux J Am Chem Soc 54 3451] in a slow stream of dry N2, i.e. under strictly dry conditions. [Gay & Maxson Inorg Synth II 147 1946, Org Synth Col Vol II 358 1943.] Dissolve it in CCl4, dry it over CaCl2, filter and distil it. Store it in sealed ampoules under N2 and keep it away from light. HARMFUL VAPOURS.

Phosphorus tribromide synthesis

7789-69-7
4186-63-4
7789-60-8
Synthesis of Phosphorus tribromide from PHOSPHORUS PENTABROMIDE and 1-Butanaminium, N,N,N-triethyl-, iodide

Phosphorus tribromide Preparation Products And Raw materials

Raw materials

Bromine Phosphorus

Preparation Products

3-(3-Hydroxyphenyl)-DL-alanine 6-Fluoro-4-(trifluoromethyl)quinolin-2-amine ,97% 4-BROMO-TETRAHYDROPYRAN 4-TERT-BUTYLCYCLOHEXANECARBOXYLIC ACID 2-(2-FLUORO-PHENYL)-ETHANESULFONYL CHLORIDE
3-BROMO-CYCLOPENT-2-ENOL Tetrahydropyranyl-4-acetic acid 3,3,3-Trifluoropropionic acid 4-BROMO-6-(TRIFLUOROMETHYL)PYRIMIDINE TETRAHYDRO-2H-PYRAN-4-YLACETYL CHLORIDE
1-(2-ETHOXYETHYL)PIPERAZINE Cyclohexylamine hydrobromide 3,5-DIMETHOXYPHENYLACETONITRILE 2-Fluoroethyl bromide GUANETHIDINE SULFATE
3,5-DIMETHOXYBENZYL BROMIDE 2-(4-FLUORO-PHENYL)-ETHANESULFONYL CHLORIDE N-(2-BROMO-3-PYRIDINYL)ACETAMIDE (4-FLUORO-BENZYL)-METHYL-AMINE 4-(Trifluoromethyl)quinoline-2-carbohydrazide ,97%
(6-Fluoro-4-(trifluoromethyl)quinolin-2-yl)methanol ,97% Ethyl 6-fluoro-4-(trifluoromethyl)quinoline-2-carboxylate ,97% 1-(2-Methoxyethyl)hydrazine 2-Bromo-6-fluoro-4-(trifluoromethyl)quinoline 2-HYDROXY-5-NITROBENZYL BROMIDE
2-(4-CHLORO-PHENYL)-ETHANESULFONYL CHLORIDE 5-ACETAMIDO-2-BROMOPYRIDINE 2-METHOXY-5-(2'-ETHYLHEXYLOXY)BENZENE-1& 2-(1,5-Dimethyl-1H-pyrazol-3-yl)acetonitrile ,97% (4-(Trifluoromethyl)quinolin-2-yl)methanol ,97%
2-Bromo-3-nitropyridine 2-(2-CHLORO-PHENYL)-ETHANESULFONYL CHLORIDE 2-BROMO-4-(TRIFLUOROMETHYL)PYRIMIDINE 4-(Trifluoromethyl)quinolin-2-amine 5-Bromomethyl-1,3-dimethyl-1H-pyrazole ,97%
2-BROMO-4-(TRIFLUOROMETHYL)QUINOLINE Cyclohexylmethyl bromide (2-FLUOROBENZYL)METHYLAMINE 4-TRIFLUOROMETHYL-QUINOLINE-2-CARBOXYLIC ACID 2-Bromoethyl ethyl ether

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Phosphorus tribromide Suppliers

Global( 438)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Chuanghai Biotechnology Co., Ltd 		+8615350571055 Sibel@chuanghaibio.com China 8753 58
Hebei Yanxi Chemical Co., Ltd. 		+8618531123677 faithe@yan-xi.com China 5853 58
Hebei Chuanghai Biotechnology Co,.LTD 		+86-13131129325 sales1@chuanghaibio.com China 5242 58
Firsky International Trade (Wuhan) Co., Ltd 		+8615387054039 admin@firsky-cn.com China 427 58
Yancheng Longshen Chemical Co.,Ltd. 		+86-18352073383 +86-18352073383 sales@longshenchem.com China 100 55
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21597 55
career henan chemical co 		+86-0371-86658258 +8613203830695 sales@coreychem.com China 29831 58
Xiamen AmoyChem Co., Ltd 		+86-86-5926051114 +8615060885618 sales@amoychem.com China 6369 58
Huaian yishu technology co.,ltd 		86-0517-85883738 13852390259 sales@yishuchem.com CHINA 53 58
Hubei xin bonus chemical co. LTD 		86-13657291602 linda@hubeijusheng.com CHINA 22963 58
Supplier Advantage
Hebei Chuanghai Biotechnology Co., Ltd 		58
Hebei Yanxi Chemical Co., Ltd. 		58
Hebei Chuanghai Biotechnology Co,.LTD 		58
Firsky International Trade (Wuhan) Co., Ltd 		58
Yancheng Longshen Chemical Co.,Ltd. 		55
Henan Tianfu Chemical Co.,Ltd. 		55
career henan chemical co 		58
Xiamen AmoyChem Co., Ltd 		58
Huaian yishu technology co.,ltd 		58
Hubei xin bonus chemical co. LTD 		58

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View Lastest Price from Phosphorus tribromide manufacturers

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Phosphorus tribromide; Tribromophosphane pictures 2026-02-07 Phosphorus tribromide; Tribromophosphane
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 US $0.00 / KG 100KG ≥99% 100 Tons/Month Yancheng Longshen Chemical Co.,Ltd.
Phosphorus tribromide pictures 2026-02-02 Phosphorus tribromide
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 US $1.00-1.00 / KG 1g 99% 50ton Shaanxi Dideu Medichem Co. Ltd
Phosphorus tribromide pictures 2026-01-30 Phosphorus tribromide
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 US $10.00 / KG 1KG 99% 10 mt Hebei Chuanghai Biotechnology Co., Ltd

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