4-Ethynylaniline
Also known as: 4-Aminophenylacetylene, 4-Ethynylbenzenamine, 1-Amino-4-ethynylbenzene, p-Aminophenylacetylene, p-Ethynylaniline
4-Ethynylaniline (CAS 14235-81-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C8H7N and a molecular weight of 117.15 g/mol. Key properties include a melting point of 98-102 °C (dec.)(lit.), a boiling point of 223.7±23.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 98.3±17.9 °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.
- 14235-81-5
- Jingsj CID
- J-1991087-3
- Molecular Formula
- C8H7N
- Molecular Weight
- 117.15 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 98-102 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 223.7±23.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 98.3±17.9 °C |
| Exact Mass | 117.057846 |
| PSA | 26.02000 |
| LogP | 1.12 |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.590 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2921420090 |
|---|---|
| Summary | HS:2921420090 aniline derivatives and their salts 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-Ethynylaniline?
The CAS number of 4-Ethynylaniline is 14235-81-5.
What are the molecular formula and molecular weight of 4-Ethynylaniline?
4-Ethynylaniline has molecular formula C8H7N and molecular weight 117.15 g/mol.
Is 4-Ethynylaniline hazardous?
4-Ethynylaniline 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-Ethynylaniline?
For 4-Ethynylaniline, Upstream Products: 4-[(Trimethylsilyl)ethynyl]aniline, 4-Iodoaniline, Trimethylsilylacetylene; Downstream Products: 4-Aminoacetophenone, 4-[2-(4-aminophenyl)ethynyl]aniline, 4-Ethylaniline.
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-Ethynylaniline (CAS 14235-81-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991087-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.