3-Ethynylbenzonitrile
Also known as: 3-Cyanoethynylbenzene, 3-Cyanophenylacetylene, 3-ETHYNYL-BENZONITRILE, 3-Ethynylbenzonitrile 99%, 3-cyanophenylacetylene, 3-ethynyl-benzonitrile, Benzonitrile, 3-ethynyl-, Benzonitrile, 3-ethynyl- (9CI), m-cyanophenylacetylene, 3-CNC6H4CCH
3-Ethynylbenzonitrile (CAS 171290-53-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H5N and a molecular weight of 127.143 g/mol. Key properties include a melting point of 42-45°C, a boiling point of 223.4±23.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 88.7±15.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 171290-53-2
- Jingsj CID
- J-1382674-9
- Molecular Formula
- C9H5N
- Molecular Weight
- 127.143 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 42-45°C |
|---|---|
| Boiling Point | 223.4±23.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 88.7±15.1 °C |
| Exact Mass | 127.042198 |
| PSA | 23.79000 |
| LogP | 1.84 |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.566 |
Frequently Asked Questions
What is the CAS number of 3-Ethynylbenzonitrile?
The CAS number of 3-Ethynylbenzonitrile is 171290-53-2.
What are the molecular formula and molecular weight of 3-Ethynylbenzonitrile?
3-Ethynylbenzonitrile has molecular formula C9H5N and molecular weight 127.143 g/mol.
What are the upstream and downstream products of 3-Ethynylbenzonitrile?
For 3-Ethynylbenzonitrile, Upstream Products: 3-[(Trimethylsilyl)ethynyl]benzonitrile, 3-Cyanobenzaldehyde, Dimethyl (1-diazo-2-oxopropyl)phosphonate; Downstream Products: 3-(1H-1,2,3-triazol-4-yl)benzonitrile.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Ethynylbenzonitrile (CAS 171290-53-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1382674-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.