4-Ethynyltriphenylamine

Also known as: 4-Ethynyl-N,N-diphenylaniline, (4-Ethynyl-phenyl)-diphenyl-amine, 4-Diphenylaminophenylacetylene, Benzenamine, 4-ethynyl-N,N-diphenyl-, N-(4-ethynylphenyl)-N,N-diphenylamine, N-(4-ethynylphenyl)-N-phenylbenzenamine, (4-N,N-diphenylamino)phenylacetylene

4-Ethynyltriphenylamine (CAS 205877-26-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C20H15N and a molecular weight of 269.340 g/mol. Key properties include a melting point of 111 °C, a boiling point of 406.6±28.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 178.1±20.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 205877-26-5
Jingsj CID: J-1520706-4
Molecular Formula: C₂₀H₁₅N
Molecular Weight: 269.340 g/mol
Category: Organic Bases
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	111 °C
Boiling Point	406.6±28.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	178.1±20.9 °C
Exact Mass	269.120453
PSA	3.24000
LogP	5.92
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.667

Frequently Asked Questions

What is the CAS number of 4-Ethynyltriphenylamine?

The CAS number of 4-Ethynyltriphenylamine is 205877-26-5.

What are the molecular formula and molecular weight of 4-Ethynyltriphenylamine?

4-Ethynyltriphenylamine has molecular formula C20H15N and molecular weight 269.340 g/mol.

What are the upstream and downstream products of 4-Ethynyltriphenylamine?

For 4-Ethynyltriphenylamine, Upstream Products: 4-Bromotriphenylamine, 4-(Diphenylamino)benzaldehyde, (Bromomethyl)triphenylphosphonium bromide.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4-Ethynyltriphenylamine (CAS 205877-26-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1520706-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.