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2,3,4,5,6-Pentafluorophenylacetic acid

Also known as: (Pentafluorophenyl)acetic acid, Benzeneacetic acid, 2,3,4,5,6-pentafluoro-, 2-(perfluorophenyl)acetic acid, 2-(2,3,4,5,6-pentafluorophenyl)acetic acid, Pentafluorophenylacetic acid, MFCD00004316, EINECS 211-497-0

2,3,4,5,6-Pentafluorophenylacetic acid (CAS 653-21-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H3F5O2 and a molecular weight of 226.100 g/mol. Key properties include a melting point of 108-110 °C(lit.), a boiling point of 235.3±35.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 96.1±25.9 °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.
653-21-4
Jingsj CID
J-1367655-6
Molecular Formula
C8H3F5O2
Molecular Weight
226.100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point108-110 °C(lit.)
Boiling Point235.3±35.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point96.1±25.9 °C
Exact Mass226.005325
PSA37.30000
LogP1.69
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.454

GHS Safety & Compliance

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

Customs & Trade Information

HS Code2916399090
Summary2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2,3,4,5,6-Pentafluorophenylacetic acid?

The CAS number of 2,3,4,5,6-Pentafluorophenylacetic acid is 653-21-4.

What are the molecular formula and molecular weight of 2,3,4,5,6-Pentafluorophenylacetic acid?

2,3,4,5,6-Pentafluorophenylacetic acid has molecular formula C8H3F5O2 and molecular weight 226.100 g/mol.

Is 2,3,4,5,6-Pentafluorophenylacetic acid hazardous?

2,3,4,5,6-Pentafluorophenylacetic acid 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 2,3,4,5,6-Pentafluorophenylacetic acid?

For 2,3,4,5,6-Pentafluorophenylacetic acid, Upstream Products: 2,3,4,5,6-Pentafluorotoluene, 1-Bromo-2,3,4,5,6-pentafluorobenzene, Pentafluorobenzaldehyde; Downstream Products: 2-(Pentafluorophenyl)ethanol.

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

Last updated:

How to cite: Jingsj. "2,3,4,5,6-Pentafluorophenylacetic acid (CAS 653-21-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1367655-6 (accessed 2026-11-09).

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