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3-Chlorostyrene

Also known as: m-Chlorostyrene, 1-Chloro-3-vinylbenzene, 1-chloro-3-ethenylbenzene, 3-Chlorovinylbenzene, 3-chloro-1-vinylbenzene, 2-(3-chlorophenyl)ethene, 2-(3-chlorophenyl)ethylene, Styrene, m-chloro-

3-Chlorostyrene (CAS 2039-85-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H7Cl and a molecular weight of 138.59400 g/mol. Key properties include a melting point of -26ºC, a boiling point of 60-62 °C (6 mmHg), a density of 1.09 g/mL at 25 °C(lit.) and a flash point of 62.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
2039-85-2
Jingsj CID
J-49111-2
Molecular Formula
C8H7Cl
Molecular Weight
138.59400 g/mol
Category
Aromatic Hydrocarbons
Last updated
11/2/2026

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Physicochemical Properties

Melting Point-26ºC
Boiling Point60-62 °C (6 mmHg)
Density1.09 g/mL at 25 °C(lit.)
Flash Point62.8 °C
Exact Mass138.02400
LogP2.98300
Vapor Pressure0.646mmHg at 25°C
Refractive Indexn20/D 1.562(lit.)

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H332 — Harmful if inhaled

Customs & Trade Information

HS Code2903999090
Summary2903999090 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 3-Chlorostyrene?

The CAS number of 3-Chlorostyrene is 2039-85-2.

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

3-Chlorostyrene has molecular formula C8H7Cl and molecular weight 138.59400 g/mol.

Is 3-Chlorostyrene hazardous?

3-Chlorostyrene has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H332 — Harmful if inhaled.

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

For 3-Chlorostyrene, Upstream Products: 1-Chloro-3-iodobenzene, 3-Chlorophenylacetylene, (1R)-1-(3-chlorophenyl)ethanol; Downstream Products: Indoline, 3-Chlorobenzaldehyde, 3'-Chloroacetophenone.

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

Last updated:

How to cite: Jingsj. "3-Chlorostyrene (CAS 2039-85-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49111-2 (accessed 2026-11-09).

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