1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene)

Also known as: 1,2-Bis(4-ethylphenyl)acetylene, 1,2-Bis(4-ethylphenyl)ethyne, 1,2-Bis(p-ethylphenyl)acetylene, 1,2-bis(4-ethylphenyl)ethyne, 1-ethyl-4-[2-(4-ethylphenyl)-1-ethynyl]benzene, 1-ethyl-4-[2-(4-ethylphenyl)ethynyl]benzene, 2T2, 4,4'-DIETHYLTOLANE, 4,4'-Diethyltolan, 4,4'-diethyltolane, BIS(4-ETHYLPHENYL)ACETYLENE, BIS(4-ETHYLPHENYL)ETHYNE, Benzene, 1,1'-(1,2-ethynediyl)bis[4-ethyl-, Benzene,1,1'-(1,2-ethynediyl)bis[4-ethyl, Bis-(4-aethyl-phenyl)-acetylen, Di-(4-Ethylphenyl)ethyne, TOLANE 2-2

1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene) (CAS 79135-69-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H18 and a molecular weight of 234.335 g/mol. Key properties include a boiling point of 353.8±31.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 162.4±19.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 79135-69-6
Jingsj CID: J-1122973-5
Molecular Formula: C₁₈H₁₈
Molecular Weight: 234.335 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	353.8±31.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	162.4±19.0 °C
Exact Mass	234.140854
LogP	6.76
Vapor Pressure	0.0±0.4 mmHg at 25°C
Refractive Index	1.583

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 1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene)?

The CAS number of 1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene) is 79135-69-6.

What are the molecular formula and molecular weight of 1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene)?

1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene) has molecular formula C18H18 and molecular weight 234.335 g/mol.

What are the upstream and downstream products of 1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene)?

For 1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene), Upstream Products: 4-Ethylbenzoyl chloride, Perthane, 1-Ethyl-4-iodobenzene.

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. "1,1'-(1,2-Ethynediyl)bis(4-ethylbenzene) (CAS 79135-69-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1122973-5 (accessed 2026-11-07).

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