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3-Bromostyrene

Also known as: 1-bromo-3-ethenylbenzene, 1-Bromo-3-vinylbenzene, Benzene, 1-bromo-3-ethenyl-, m-bromostyrene, M-BROMOSTYRENE

3-Bromostyrene (CAS 2039-86-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H7Br and a molecular weight of 183.045 g/mol. Key properties include a boiling point of 227.6±0.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 67.8±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2039-86-3
Jingsj CID
J-4033-5
Molecular Formula
C8H7Br
Molecular Weight
183.045 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point227.6±0.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point67.8±0.0 °C
Exact Mass181.973099
LogP3.53
Vapor Pressure0.1±0.4 mmHg at 25°C
Refractive Index1.598

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

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-Bromostyrene?

The CAS number of 3-Bromostyrene is 2039-86-3.

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

3-Bromostyrene has molecular formula C8H7Br and molecular weight 183.045 g/mol.

Is 3-Bromostyrene hazardous?

3-Bromostyrene has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

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

For 3-Bromostyrene, Upstream Products: Tributyl(vinyl)tin, 3-Bromophenol, 1-Bromo-3-(2-bromoethyl)benzene; Downstream Products: 3-(3-Bromophenyl)propanal, (3-Bromophenyl)oxirane, 3-(3-Bromophenyl)cyclobutanone.

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-Bromostyrene (CAS 2039-86-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4033-5 (accessed 2026-11-09).

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