3,4-Difluorostyrene

Also known as: 1,2-Difluoro-4-vinylbenzene, 4-Ethenyl-1,2-difluorobenzene, Benzene, 4-ethenyl-1,2-difluoro-, 3,4-Difluorovinylbenzene, PC6276

3,4-Difluorostyrene (CAS 405-03-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H6F2 and a molecular weight of 140.13000 g/mol. Key properties include a boiling point of 146.5ºC at 760mmHg, a density of 1.131g/cm3 and a flash point of 31.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 405-03-8
Jingsj CID: J-1012664-4
Molecular Formula: C₈H₆F₂
Molecular Weight: 140.13000 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	146.5ºC at 760mmHg
Density	1.131g/cm3
Flash Point	31.7ºC
Exact Mass	140.04400
LogP	2.60780
Vapor Pressure	5.83mmHg at 25°C
Refractive Index	1.512

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 3,4-Difluorostyrene?

The CAS number of 3,4-Difluorostyrene is 405-03-8.

What are the molecular formula and molecular weight of 3,4-Difluorostyrene?

3,4-Difluorostyrene has molecular formula C8H6F2 and molecular weight 140.13000 g/mol.

What are the upstream and downstream products of 3,4-Difluorostyrene?

For 3,4-Difluorostyrene, Upstream Products: 3,4-Difluorobenzaldehyde, Methyltriphenylphosphonium bromide; Downstream Products: (1R,2R)-2-(3,4-difluorophenyl)cyclopropane-1-carboxylic acid.

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. "3,4-Difluorostyrene (CAS 405-03-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1012664-4 (accessed 2026-11-09).

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