Benzene, 1-ethynyl-2,4-difluoro-

1-乙炔基-2,4-二氟苯

Also known as: 1-ethynyl-2,4-difluorobenzene, 2,4-difluorophenylacetylene, 2,4-difluoroethynylbenzene, 2,4-difluorophenylethyne, MFCD02093726

Benzene, 1-ethynyl-2,4-difluoro- (CAS 302912-34-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H4F2 and a molecular weight of 138.11400 g/mol. It is also known as 1-ethynyl-2,4-difluorobenzene, 2,4-difluorophenylacetylene and 2,4-difluoroethynylbenzene. Key properties include a melting point of 29-32ºC(lit.), a boiling point of 134.7ºC at 760 mmHg, a density of 1.17g/cm3 and a flash point of 92 °F. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 302912-34-1
Jingsj CID: J-1055726-6
Molecular Formula: C₈H₄F₂
Chinese Name: 1-乙炔基-2,4-二氟苯
Molecular Weight: 138.11400 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	29-32ºC(lit.)
Boiling Point	134.7ºC at 760 mmHg
Density	1.17g/cm3
Flash Point	92 °F

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Benzene, 1-ethynyl-2,4-difluoro-?

The CAS number of Benzene, 1-ethynyl-2,4-difluoro- is 302912-34-1.

What are the molecular formula and molecular weight of Benzene, 1-ethynyl-2,4-difluoro-?

Benzene, 1-ethynyl-2,4-difluoro- has molecular formula C8H4F2 and molecular weight 138.11400 g/mol.

Is Benzene, 1-ethynyl-2,4-difluoro- hazardous?

Benzene, 1-ethynyl-2,4-difluoro- has GHS signal word Warning.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Benzene, 1-ethynyl-2,4-difluoro- (CAS 302912-34-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1055726-6 (accessed 2026-10-22).

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