4-Ethynylbenzonitrile
Also known as: 4-Cyanophenylacetylene, 1-Cyano-4-ethynylbenzene, p-Cyanophenylacetylene, Benzonitrile, 4-ethynyl-, 4-ethynylbenzenecarbonitrile, MFCD04974058
4-Ethynylbenzonitrile (CAS 3032-92-6) 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 156-160ºC(lit.), a boiling point of 230.2±23.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 92.9±15.1 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3032-92-6
- Jingsj CID
- J-32235-0
- 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 | 156-160ºC(lit.) |
|---|---|
| Boiling Point | 230.2±23.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 92.9±15.1 °C |
| Exact Mass | 127.042198 |
| PSA | 23.79000 |
| LogP | 1.84 |
| Appearance | Solid | Pale yellow |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | 1.566 |
| Additional Property | Slightly soluble in water. |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2926909090 |
|---|---|
| Summary | HS:2926909090 other nitrile-function compounds VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Ethynylbenzonitrile?
The CAS number of 4-Ethynylbenzonitrile is 3032-92-6.
What are the molecular formula and molecular weight of 4-Ethynylbenzonitrile?
4-Ethynylbenzonitrile has molecular formula C9H5N and molecular weight 127.143 g/mol.
Is 4-Ethynylbenzonitrile hazardous?
4-Ethynylbenzonitrile has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 4-Ethynylbenzonitrile?
For 4-Ethynylbenzonitrile, Upstream Products: 4-[(Trimethylsilyl)ethynyl]benzonitrile, Dimethyl (1-diazo-2-oxopropyl)phosphonate, 4-Cyanobenzaldehyde; Downstream Products: 4,4'-(1,2-ethynediyl)dibenzonitrile, Benzoxazole, 4-(2-Benzoxazolyl)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. "4-Ethynylbenzonitrile (CAS 3032-92-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32235-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.