2,4-Dichloro-1-ethynylbenzene

Also known as: 2,4-Dichlorophenylacetylene, 2,4-dichloro ethynylbenzene, 2,4-dichloro-1-ethynyl-benzene, Benzene, 2,4-dichloro-1-ethynyl-

2,4-Dichloro-1-ethynylbenzene (CAS 75717-77-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H4Cl2 and a molecular weight of 171.023 g/mol. Key properties include a boiling point of 218.7±30.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 88.1±18.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 75717-77-0
Jingsj CID: J-1085662-9
Molecular Formula: C₈H₄Cl₂
Molecular Weight: 171.023 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	218.7±30.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	88.1±18.1 °C
Exact Mass	169.969009
LogP	3.60
Vapor Pressure	0.2±0.4 mmHg at 25°C
Refractive Index	1.583

Customs & Trade Information

HS Code	2903999090
Summary	2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2,4-Dichloro-1-ethynylbenzene?

The CAS number of 2,4-Dichloro-1-ethynylbenzene is 75717-77-0.

What are the molecular formula and molecular weight of 2,4-Dichloro-1-ethynylbenzene?

2,4-Dichloro-1-ethynylbenzene has molecular formula C8H4Cl2 and molecular weight 171.023 g/mol.

What are the upstream and downstream products of 2,4-Dichloro-1-ethynylbenzene?

For 2,4-Dichloro-1-ethynylbenzene, Upstream Products: 2,4-Dichlorobenzaldehyde, 2,4-Dichlorophenol, 2',4'-Dichloroacetophenone; Downstream Products: 2,2',3,4,4',5-Hexachlorobiphenyl.

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. "2,4-Dichloro-1-ethynylbenzene (CAS 75717-77-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1085662-9 (accessed 2026-11-09).

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