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2-(4-methylphenoxy)acetic acid

Also known as: (4-Methylphenoxy)acetic acid, 4-Methylphenoxyacetic acid, (p-Tolyloxy)-acetic acid, 2-p-tolyloxyacetic acid, p-Methylphenoxyacetic acid, Acetic acid, (4-methylphenoxy)-, NSC 38176, EINECS 213-374-7, MFCD00014365

2-(4-methylphenoxy)acetic acid (CAS 940-64-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O3 and a molecular weight of 166.174 g/mol. Key properties include a melting point of 140-142 °C(lit.), a boiling point of 297.2±15.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 120.0±13.9 °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.
940-64-7
Jingsj CID
J-24332-3
Molecular Formula
C9H10O3
Molecular Weight
166.174 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point140-142 °C(lit.)
Boiling Point297.2±15.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point120.0±13.9 °C
Exact Mass166.062988
PSA46.53000
LogP1.80
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.537

GHS Safety & Compliance

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

Customs & Trade Information

HS Code2918990090
Summary2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-(4-methylphenoxy)acetic acid?

The CAS number of 2-(4-methylphenoxy)acetic acid is 940-64-7.

What are the molecular formula and molecular weight of 2-(4-methylphenoxy)acetic acid?

2-(4-methylphenoxy)acetic acid has molecular formula C9H10O3 and molecular weight 166.174 g/mol.

Is 2-(4-methylphenoxy)acetic acid hazardous?

2-(4-methylphenoxy)acetic 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-(4-methylphenoxy)acetic acid?

For 2-(4-methylphenoxy)acetic acid, Upstream Products: Ethyl (4-methylphenoxy)acetate, p-Cresol, Chloroacetic acid; Downstream Products: 4-Hydroxybenzoic acid, 2-[(4-Methylphenyl)amino]ethanol, 4-Methylphenoxyacetonitrile.

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-(4-methylphenoxy)acetic acid (CAS 940-64-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24332-3 (accessed 2026-11-09).

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