3-Methylphenylacetylene

Also known as: 1-ETHYNYL-3-METHYLBENZENE, 1-Ethynyl-3-methylbenzene, 3'-METHYLPHENYL ACETYLENE, 3-ETHYNYLTOLUENE, 3-Ethynyltoluene, 3-Ethynyltoluene, 1-Ethynyl-3-methylbenzene, Benzene, 1-ethynyl-3-methyl-, Benzene, 1-ethynyl-3-methyl- (9CI), Benzene,1-ethynyl-3-methyl-, MFCD01318174, m-Ethylnyltoluene, m-Tolylacetylene,97%

3-Methylphenylacetylene (CAS 766-82-5) 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 boiling point of 176.3±19.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 47.4±15.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 766-82-5
Jingsj CID: J-1990479-1
Molecular Formula: C₉H₈
Molecular Weight: 116.160 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	176.3±19.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	47.4±15.6 °C
Exact Mass	116.062599
LogP	2.86
Vapor Pressure	1.5±0.2 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 3-Methylphenylacetylene?

The CAS number of 3-Methylphenylacetylene is 766-82-5.

What are the molecular formula and molecular weight of 3-Methylphenylacetylene?

3-Methylphenylacetylene has molecular formula C9H8 and molecular weight 116.160 g/mol.

What are the upstream and downstream products of 3-Methylphenylacetylene?

For 3-Methylphenylacetylene, Upstream Products: 3-[(Trimethylsilyl)ethynyl]toluene, 3-Bromotoluene, Trimethylsilylacetylene; Downstream Products: 3'-Methylacetanilide, Methyl 3-methylbenzoate, 3-Methylphenethyl alcohol.

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. "3-Methylphenylacetylene (CAS 766-82-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990479-1 (accessed 2026-11-09).

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