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3-Chloro-4-hydroxyphenylacetic acid

Also known as: 3-Chloro-4-hydroxyphenylacetic acid, (3-Chloro-4-hydroxyphenyl)acetic acid, 2-(3-Chloro-4-hydroxyphenyl)acetic acid, 3-chloro-4-hydroxybenzeneacetic acid, 4-Hydroxy-3-chlorophenylacetic acid, m-Chloro-p-hydroxyphenylacetic acid, Benzeneacetic acid, 3-chloro-4-hydroxy-, 4-HCPA, VUFB9649, MFCD00004349, EINECS 251-643-0

3-Chloro-4-hydroxyphenylacetic acid (CAS 33697-81-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H7ClO3 and a molecular weight of 186.592 g/mol. Key properties include a melting point of 108-110 °C(lit.), a boiling point of 348.6±27.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 164.6±23.7 °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.
33697-81-3
Jingsj CID
J-26890-6
Molecular Formula
C8H7ClO3
Molecular Weight
186.592 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point108-110 °C(lit.)
Boiling Point348.6±27.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point164.6±23.7 °C
Exact Mass186.008377
PSA57.53000
LogP1.33
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.610

GHS Safety & Compliance

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

Customs & Trade Information

HS Code2918290000
SummaryHS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-Chloro-4-hydroxyphenylacetic acid?

The CAS number of 3-Chloro-4-hydroxyphenylacetic acid is 33697-81-3.

What are the molecular formula and molecular weight of 3-Chloro-4-hydroxyphenylacetic acid?

3-Chloro-4-hydroxyphenylacetic acid has molecular formula C8H7ClO3 and molecular weight 186.592 g/mol.

Is 3-Chloro-4-hydroxyphenylacetic acid hazardous?

3-Chloro-4-hydroxyphenylacetic 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 3-Chloro-4-hydroxyphenylacetic acid?

For 3-Chloro-4-hydroxyphenylacetic acid, Upstream Products: 4-Hydroxyphenylacetic acid, 3-Chloro-4-methoxyphenylacetic acid, 2-Chlorophenol; Downstream Products: Methyl (3-chloro-4-hydroxyphenyl)acetate, 4-Hydroxyphenylacetic acid.

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-Chloro-4-hydroxyphenylacetic acid (CAS 33697-81-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26890-6 (accessed 2026-11-09).

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