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4-Bromo-2-methoxybenzoic acid

Also known as: 2-Methoxy-4-bromobenzoic acid, 5-Bromo-2-carboxyanisole, Benzoic acid, 4-bromo-2-methoxy-

4-Bromo-2-methoxybenzoic acid (CAS 72135-36-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H7BrO3 and a molecular weight of 231.043 g/mol. Key properties include a melting point of 155-159 °C, a boiling point of 318.1±27.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 146.2±23.7 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
72135-36-5
Jingsj CID
J-1142353-3
Molecular Formula
C8H7BrO3
Molecular Weight
231.043 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point155-159 °C
Boiling Point318.1±27.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point146.2±23.7 °C
Exact Mass229.957855
PSA46.53000
LogP2.58
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.584

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed

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 4-Bromo-2-methoxybenzoic acid?

The CAS number of 4-Bromo-2-methoxybenzoic acid is 72135-36-5.

What are the molecular formula and molecular weight of 4-Bromo-2-methoxybenzoic acid?

4-Bromo-2-methoxybenzoic acid has molecular formula C8H7BrO3 and molecular weight 231.043 g/mol.

Is 4-Bromo-2-methoxybenzoic acid hazardous?

4-Bromo-2-methoxybenzoic acid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of 4-Bromo-2-methoxybenzoic acid?

For 4-Bromo-2-methoxybenzoic acid, Upstream Products: 4-Bromo-2-hydroxybenzoic acid, iodomethane, Methyl 4-bromo-2-methoxybenzoate; Downstream Products: Methyl 4-bromo-2-methoxybenzoate, 4-Bromo-2-hydroxybenzoic 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. "4-Bromo-2-methoxybenzoic acid (CAS 72135-36-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1142353-3 (accessed 2026-11-09).

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