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2-Hydroxy-6-methoxybenzoic acid

Also known as: 6-Methoxysalicylic acid, 2-Carboxy-3-methoxyphenol, 6-Hydroxy-o-anisic acid, Benzoic acid, 2-hydroxy-6-methoxy-

2-Hydroxy-6-methoxybenzoic acid (CAS 3147-64-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H8O4 and a molecular weight of 168.147 g/mol. Key properties include a melting point of 134-138, a boiling point of 330.4±27.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 138.7±17.2 °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.
3147-64-6
Jingsj CID
J-1993379-0
Molecular Formula
C8H8O4
Molecular Weight
168.147 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point134-138
Boiling Point330.4±27.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point138.7±17.2 °C
Exact Mass168.042252
PSA66.76000
LogP1.78
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.586

GHS Safety & Compliance

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

Activity & Biological Data

Additional Information[1]. Xu X, et al. Rapid and sensitive determination of acetylsalicylic acid and salicylic acid in plasma using liquid chromatography-tandem mass spectrometry: application to pharmacokinetic study. Biomed Chromatogr. 2009 Sep;23(9):973-9. [2]. Palacios-Espinosa F, et al. Antinociceptive, hypoglycemic and spasmolytic effects of Brickellia veronicifolia. J Ethnopharmacol. 2008 Aug 13;118(3):448-54.

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-Hydroxy-6-methoxybenzoic acid?

The CAS number of 2-Hydroxy-6-methoxybenzoic acid is 3147-64-6.

What are the molecular formula and molecular weight of 2-Hydroxy-6-methoxybenzoic acid?

2-Hydroxy-6-methoxybenzoic acid has molecular formula C8H8O4 and molecular weight 168.147 g/mol.

Is 2-Hydroxy-6-methoxybenzoic acid hazardous?

2-Hydroxy-6-methoxybenzoic 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-Hydroxy-6-methoxybenzoic acid?

For 2-Hydroxy-6-methoxybenzoic acid, Upstream Products: Carbon dioxide, 2,6-Dimethoxybenzoic acid, Methyl 2,6-dimethoxybenzoate; Downstream Products: Methyl 2,6-dimethoxybenzoate.

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-Hydroxy-6-methoxybenzoic acid (CAS 3147-64-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993379-0 (accessed 2026-11-09).

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