4-Ethynyltoluene

Also known as: 1-ETHYNYL-4-METHYLBENZENE, 1-Ethynyl-4-methylbenzene, 4'-METHYLPHENYL ACETYLENE, 4-ETHYNYLTOLUENE, 4-Ethynyltoluene, 1-Ethynyl-4-methylbenzene, p-Tolylacetylene, 4-METHYLPHENYLACETYLENE, 4-Methylphenylacetylene, 5-ETHYNYLTOLUENE, BENZENE, 1-ETHYNYL-4-METHYL-, Benzene, 1-ethynyl-4-methyl-, MFCD00008571, ethynyltoluene, p-ethynyltoluene

4-Ethynyltoluene (CAS 766-97-2) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C9H8 and a molecular weight of 116.160 g/mol. Key properties include a melting point of 168-170, a boiling point of 164.1±19.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 48.9±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 766-97-2
Jingsj CID: J-922445-7
Molecular Formula: C₉H₈
Molecular Weight: 116.160 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	168-170
Boiling Point	164.1±19.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	48.9±0.0 °C
Exact Mass	116.062599
LogP	2.86
Vapor Pressure	2.6±0.1 mmHg at 25°C
Refractive Index	1.534

Customs & Trade Information

HS Code	2902909090
Summary	2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Ethynyltoluene?

The CAS number of 4-Ethynyltoluene is 766-97-2.

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

4-Ethynyltoluene has molecular formula C9H8 and molecular weight 116.160 g/mol.

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

For 4-Ethynyltoluene, Upstream Products: 4-Iodotoluene, Propiolic acid, Trimethyl(p-tolylethynyl)silane; Downstream Products: Benzamide, 1-Methyl-4-((E)-styryl)-benzene, 3-(4-Methylphenyl)propanoic acid.

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-Ethynyltoluene (CAS 766-97-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-922445-7 (accessed 2026-11-09).

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