1-Bromo-2-ethynylbenzene

1-溴-2-乙炔基苯

Also known as: 2-Bromophenylacetylene, o-Bromophenylacetylene, 2-bromo-1-ethynylbenzene, Benzene, 1-bromo-2-ethynyl-

1-Bromo-2-ethynylbenzene (CAS 766-46-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H5Br and a molecular weight of 181.029 g/mol. It is also known as 2-Bromophenylacetylene, o-Bromophenylacetylene and 2-bromo-1-ethynylbenzene. Key properties include a boiling point of 214.1±23.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 87.2±17.0 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
766-46-1
Jingsj CID
J-1341025-6
Molecular Formula
C8H5Br
Chinese Name
1-溴-2-乙炔基苯
Molecular Weight
181.029 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point214.1±23.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point87.2±17.0 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1-Bromo-2-ethynylbenzene?

The CAS number of 1-Bromo-2-ethynylbenzene is 766-46-1.

What are the molecular formula and molecular weight of 1-Bromo-2-ethynylbenzene?

1-Bromo-2-ethynylbenzene has molecular formula C8H5Br and molecular weight 181.029 g/mol.

Is 1-Bromo-2-ethynylbenzene hazardous?

1-Bromo-2-ethynylbenzene has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1-Bromo-2-ethynylbenzene (CAS 766-46-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1341025-6 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.