2-Vinylbenzoic acid

Also known as: Benzoic acid, 2-ethenyl- (9CI), 2-ethenylbenzoic acid, 2-vinyl-benzoic acid, 2-vinylbenzoicacid, o-vinylbenzoic acid, carboxystyrene, styrenecarboxylic acid, vinylbenzoic acid

2-Vinylbenzoic acid (CAS 27326-43-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H8O2 and a molecular weight of 148.15900 g/mol. Key properties include a boiling point of 282.688ºC at 760 mmHg, a density of 1.158 g/cm3 and a flash point of 129.386ºC. It is classified under GHS with signal word Danger and hazard statements H318 — Causes serious eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 27326-43-8
Jingsj CID: J-1516483-7
Molecular Formula: C₉H₈O₂
Molecular Weight: 148.15900 g/mol
Category: Organic Acids
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	282.688ºC at 760 mmHg
Density	1.158 g/cm3
Flash Point	129.386ºC
Exact Mass	148.05200
PSA	37.30000
LogP	2.02780
Storage Conditions	-20°C

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

H318 — Causes serious eye damage
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of 2-Vinylbenzoic acid?

The CAS number of 2-Vinylbenzoic acid is 27326-43-8.

What are the molecular formula and molecular weight of 2-Vinylbenzoic acid?

2-Vinylbenzoic acid has molecular formula C9H8O2 and molecular weight 148.15900 g/mol.

Is 2-Vinylbenzoic acid hazardous?

2-Vinylbenzoic acid has GHS signal word Danger and hazard statements H318 — Causes serious eye damage; H335 — May cause respiratory irritation.

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-Vinylbenzoic acid (CAS 27326-43-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1516483-7 (accessed 2026-11-09).

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