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Boron tribromide

Also known as: BBr3, BORON TRIBROMIDE FOR SYNTHESIS, Borane, tribromo-, Boron Tribromide (29% in Heptane, ca. 1mol/L), Boron tribroMide, 1.0 M solution in CH2Cl2, Boron tribroMide, 1.0 M solution in Methylene chloride, SpcSeal, Boron tribroMide, 1.0 M solution in heptane, SpcSeal, Boron tribroMide, 1M soln. in heptane, Boron tribromide [UN2692] [Corrosive], Boron tribromide, 1M solution in methylene chloride, AcroSeal, BorontribroMide , 99% BBr3, Borontribromide, EINECS 233-657-9, MFCD00011312, Tribromoborane

Boron tribromide (CAS 10294-33-4) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula BBr3 and a molecular weight of 250.523 g/mol. Key properties include a melting point of −46 °C(lit.), a boiling point of 91.3±9.0 °C at 760 mmHg, a density of 2.8±0.1 g/cm3 and a flash point of -1.1 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H300 and H330 — Fatal if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
10294-33-4
Jingsj CID
J-1319719-8
Molecular Formula
BBr3
Molecular Weight
250.523 g/mol
Category
Inorganic Chemicals
Last updated
11/2/2026
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Physicochemical Properties

Melting Point−46 °C(lit.)
Boiling Point91.3±9.0 °C at 760 mmHg
Density2.8±0.1 g/cm3
Flash Point-1.1 °C
Exact Mass247.764297
LogP3.61
Additional Property8.6 (vs air)
Vapor Pressure61.3±0.2 mmHg at 25°C
Refractive Index1.550

GHS Safety & Compliance

Flammable / Corrosion / Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H300
  • H330 — Fatal if inhaled
  • H304
  • H314 — Causes severe skin burns and eye damage
  • H336 — May cause drowsiness or dizziness
  • H410 — Very toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code2827590000

Frequently Asked Questions

What is the CAS number of Boron tribromide?

The CAS number of Boron tribromide is 10294-33-4.

What are the molecular formula and molecular weight of Boron tribromide?

Boron tribromide has molecular formula BBr3 and molecular weight 250.523 g/mol.

Is Boron tribromide hazardous?

Boron tribromide has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H300; H330 — Fatal if inhaled.

What are the upstream and downstream products of Boron tribromide?

For Boron tribromide, Upstream Products: Aluminium bromide, Potassium tetrafluoroborate; Downstream Products: Vinylboronic acid MIDA ester, Thionyl bromide, 2-Naphthaleneboronic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Boron tribromide (CAS 10294-33-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1319719-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.