1-(3-Ethynylphenyl)ethanone
Also known as: 3-Acetylphenylacetylene, 1-(3-Ethynyl-phenyl)-ethanone, 3-ethynylacetophenone, Ethanone, 1-(3-ethynylphenyl)-, TIMTEC-BB SBB008830
1-(3-Ethynylphenyl)ethanone (CAS 139697-98-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H8O and a molecular weight of 144.170 g/mol. Key properties include a boiling point of 249.9±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 100.9±17.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 139697-98-6
- Jingsj CID
- J-1028762-4
- Molecular Formula
- C10H8O
- Molecular Weight
- 144.170 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 249.9±23.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 100.9±17.6 °C |
| Exact Mass | 144.057510 |
| PSA | 17.07000 |
| LogP | 1.85 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.541 |
Frequently Asked Questions
What is the CAS number of 1-(3-Ethynylphenyl)ethanone?
The CAS number of 1-(3-Ethynylphenyl)ethanone is 139697-98-6.
What are the molecular formula and molecular weight of 1-(3-Ethynylphenyl)ethanone?
1-(3-Ethynylphenyl)ethanone has molecular formula C10H8O and molecular weight 144.170 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(3-Ethynylphenyl)ethanone (CAS 139697-98-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1028762-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.