2,5-Dichlorostyrene

2,5-二氯苯乙烯

Also known as: 1,4-dichloro-2-ethenylbenzene, 1,4-dichloro-2-vinylbenzene, NSC 20953, styrene, 2,5-dichloro-, EINECS 214-378-1

2,5-Dichlorostyrene (CAS 1123-84-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H6Cl2 and a molecular weight of 173.03900 g/mol. It is also known as 1,4-dichloro-2-ethenylbenzene, 1,4-dichloro-2-vinylbenzene and NSC 20953. Key properties include a boiling point of 230.7ºC at 760mmHg, a density of 1.242g/cm3 and a flash point of 95.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1123-84-8
Jingsj CID
J-29903-3
Molecular Formula
C8H6Cl2
Chinese Name
2,5-二氯苯乙烯
Molecular Weight
173.03900 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point230.7ºC at 760mmHg
Density1.242g/cm3
Flash Point95.2ºC

Frequently Asked Questions

What is the CAS number of 2,5-Dichlorostyrene?

The CAS number of 2,5-Dichlorostyrene is 1123-84-8.

What are the molecular formula and molecular weight of 2,5-Dichlorostyrene?

2,5-Dichlorostyrene has molecular formula C8H6Cl2 and molecular weight 173.03900 g/mol.

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

Last updated:

How to cite: Jingsj. "2,5-Dichlorostyrene (CAS 1123-84-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29903-3 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.