3,4-Difluorophenylacetylene
3,4-二氟苯乙炔
Also known as: 1,2-Difluoro-4-ethynylbenzene, 4-Ethynyl-1,2-difluorobenzene, 3,4-Difluoro-1-ethynylbenzene, 3,4-difluorobenzeneacetylene, Benzene, 4-ethynyl-1,2-difluoro-
3,4-Difluorophenylacetylene (CAS 143874-13-9) 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 138.114 g/mol. It is also known as 1,2-Difluoro-4-ethynylbenzene, 4-Ethynyl-1,2-difluorobenzene and 3,4-Difluoro-1-ethynylbenzene. Key properties include a boiling point of 145.9±30.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 31.4±12.4 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 143874-13-9
- Jingsj CID
- J-1359014-3
- Molecular Formula
- C8H4F2
- Chinese Name
- 3,4-二氟苯乙炔
- Molecular Weight
- 138.114 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 145.9±30.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 31.4±12.4 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of 3,4-Difluorophenylacetylene?
The CAS number of 3,4-Difluorophenylacetylene is 143874-13-9.
What are the molecular formula and molecular weight of 3,4-Difluorophenylacetylene?
3,4-Difluorophenylacetylene has molecular formula C8H4F2 and molecular weight 138.114 g/mol.
Is 3,4-Difluorophenylacetylene hazardous?
3,4-Difluorophenylacetylene has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Difluorophenylacetylene (CAS 143874-13-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359014-3 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.