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Chlorides and other halides

Phosphorus oxybromide

Also known as Phosphoric tribromide, Phosphoryl bromide, Phosphoryl tribromide

CAS 7789-59-5Formula Br3OPMolar mass 286.69 g/molEC 232-177-7
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 12 suppliers listed
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Phosphorus oxybromide chemical structure, Br3OP, CAS 7789-59-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals
Melting point
56 °C
Boiling point
193 °C
Density
2.822
Solubility
SOL IN ETHER, BENZENE, CHLOROFORM, CARBON DISULFIDE, CONCENTRATED SULFURIC ACID
HS code
281290
Category
Chlorides and other halides
UN number
UN 1939
Illustrative photo, colourless crystals in small glass vials on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Phosphorus oxybromide?

Plain description, key identifiers and synonyms

Phosphorus oxybromide appears as a colorless crystalline solid or liquid if heated above 133 °F with a pungent odor. It is commonly heated and shipped in a molten state. Soluble in water, but, decomposed by water to hydrobromic and phosphoric acid with evolution of heat. Reacts with organic materials to cause fire. Evolves highly toxic and corrosive gases when exposed to fire. Corrosive to metals and tissue. Used to make other chemicals.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
7789-59-5 CAS number cross-checked
EC number
232-177-7
Molecular formula
Br3OP
UNII
H98H8Y87QQ
MDL number
MFCD00036298
InChIKey
UXCDUFKZSUBXGM-UHFFFAOYSA-N
InChI
InChI=1S/Br3OP/c1-5(2,3)4
SMILES (canonical and isomeric)
O=P(Br)(Br)Br

Synonyms

  • Phosphoric tribromide
  • Phosphoryl bromide
  • Phosphoryl tribromide
  • Tribromophosphorus oxide
  • Phosphorus (V) oxybromide
  • Phosphonyl tribromide
  • Phosphorus bromide oxide (pbr3o)
  • UN2576 (molten)
  • Phosphorus oxytribromide
  • Phosphorus oxybromide, solid
  • Phosphorus(V) oxybromide
  • Phosphorousoxybromide
  • POBr3
  • Phosphorus oxybromide, molten
  • Phosphorusoxybromide
  • Phosphorous oxybromide
  • Br3OP
  • phosphoryltribromide
  • Phosphorus oxide bromide, Phosphoryl bromide
  • P O Br3
  • P(O)Br3
  • Phosphorus(V) oxybromide, >95%
  • Phosphorus oxybromide [UN1939] [Corrosive]
  • Phosphorus oxybromide, molten [UN2576] [Corrosive]

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Colorless crystalsexp.
Melting point
56 °Cexp.
Boiling point
193 °Cexp.
Density
2.822exp.
Solubility
SOL IN ETHER, BENZENE, CHLOROFORM, CARBON DISULFIDE, CONCENTRATED SULFURIC ACIDexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
286.69 g/molcalc.
Exact mass
283.7237 Dacalc.
LogP (octanol/water)
3.28calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H290May be corrosive to metals.
  • H314Causes severe skin burns and eye damage.
  • H335May cause respiratory irritation.
Precautionary statements (19)
  • P234Keep only in original packaging.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P390Absorb spillage to prevent material damage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P406Store in a corrosion resistant container with a resistant inner liner.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1939
Transport hazard class
8
Packing group
II

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Phosphorus oxybromide suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 12 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

12 suppliers in 4 countries

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Phosphorus oxybromide price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Principally used as chem intermediate.

How it is made

Reaction of phosphorus pentabromide & phosphorus pentoxide

Reaction of phosphorus pentabromide and phosphorus pentoxide: honigschmid, hirschbold-wittner, z anorg allgem chem 243: 355 (1940), johnson, nunn, j am chem soc 63: 141 (1941), booth, seegmiller, inorg syn 2: 151 (1946).

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Phosphorus oxybromide is traded under.

HS 2812.90Indicative HS code

Halides and halide oxides of non-metals, other

World exports in 2024
$572M
+10.6% vs 2023, imports $388M
2019 to 2024
Top exporters
  1. South Korea28.3%
  2. China20.0%
  3. United States18.5%
Top importers
  1. South Korea16.4%
  2. Japan12.3%
  3. Singapore11.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Phosphorus oxybromide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Phosphorus oxybromide, based on the data on this page

What is Phosphorus oxybromide?

Phosphorus oxybromide appears as a colorless crystalline solid or liquid if heated above 133 °F with a pungent odor. It is commonly heated and shipped in a molten state. Soluble in water, but, decomposed by water to hydrobromic and phosphoric acid with evolution of heat. Reacts with organic materials to cause fire.

What is the CAS number of Phosphorus oxybromide?

The CAS registry number of Phosphorus oxybromide is 7789-59-5.

What is the molecular formula and weight of Phosphorus oxybromide?

The molecular formula of Phosphorus oxybromide is Br3OP and its molar mass is 286.69 g/mol.

What is Phosphorus oxybromide used for?

Principally used as chem intermediate.

Is Phosphorus oxybromide hazardous?

Phosphorus oxybromide carries the GHS signal word "Danger". Main hazards: may be corrosive to metals, causes severe skin burns and eye damage, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Phosphorus oxybromide?

Phosphorus oxybromide is usually classified under HS code 281290 (Halides and halide oxides of non-metals, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Phosphorus oxybromide?

CompoundList lists 12 suppliers of Phosphorus oxybromide in India, China, South Korea and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Phosphorus oxybromide in India?

5 suppliers in India list Phosphorus oxybromide on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Phosphorus oxybromide?

Suppliers quote Phosphorus oxybromide on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Phosphorus oxybromide

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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