Gallic acid

Also known as: 3,4,5-Trihydroxybenzoic acid, 3,4,5-Trihydroxy-benzoic acid, Pyrogallol-5-carboxylic acid, Gallussaure, Benzoic acid, 3,4,5-trihydroxy-, Acid, Gallic, Gallic acid, anhydrous

Gallic acid (CAS 149-91-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H6O5 and a molecular weight of 170.120 g/mol. Key properties include a melting point of 252 °C (dec.)(lit.), a boiling point of 501.1±50.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 271.0±26.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 149-91-7
Jingsj CID: J-11494-9
Molecular Formula: C₇H₆O₅
Molecular Weight: 170.120 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	252 °C (dec.)(lit.)
Boiling Point	501.1±50.0 °C at 760 mmHg
Density	1.7±0.1 g/cm3
Flash Point	271.0±26.6 °C
Exact Mass	170.021530
PSA	97.99000
LogP	0.91
Vapor Pressure	0.0±1.4 mmHg at 25°C
Refractive Index	1.730
Additional Property	12 g/L cold water

Activity & Biological Data

Target	COX-2
Additional Information	[1]. Amaravani M, et al. COX-2 structural analysis and docking studies with gallic acid structural analogues. Springerplus. 2012 Dec;1(1):58. [2]. Bak EJ, et al. Gallic acid improves glucose tolerance and triglyceride concentration in diet-induced obesity mice. Scand J Clin Lab Invest. 2013 Dec;73(8):607-14. [3]. Cheng Y, et al. Plant Natural Products Calycosin and Gallic Acid Synergistically Attenuate Neutrophil Infiltration and Subsequent Injury in Isoproterenol-Induced Myocardial Infarction: A Possible Role for Leukotriene B4 12-Hydroxydehydrogenase? Oxid Med Cell Longev. 2015;2015:434052.

Target

COX-2

Additional Information

[1]. Amaravani M, et al. COX-2 structural analysis and docking studies with gallic acid structural analogues. Springerplus. 2012 Dec;1(1):58. [2]. Bak EJ, et al. Gallic acid improves glucose tolerance and triglyceride concentration in diet-induced obesity mice. Scand J Clin Lab Invest. 2013 Dec;73(8):607-14. [3]. Cheng Y, et al. Plant Natural Products Calycosin and Gallic Acid Synergistically Attenuate Neutrophil Infiltration and Subsequent Injury in Isoproterenol-Induced Myocardial Infarction: A Possible Role for Leukotriene B4 12-Hydroxydehydrogenase? Oxid Med Cell Longev. 2015;2015:434052.

Customs & Trade Information

HS Code	2918290000
Summary	HS: 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 Gallic acid?

The CAS number of Gallic acid is 149-91-7.

What are the molecular formula and molecular weight of Gallic acid?

Gallic acid has molecular formula C7H6O5 and molecular weight 170.120 g/mol.

What are the upstream and downstream products of Gallic acid?

For Gallic acid, Upstream Products: Methyl gallate, 3,4,5-Trimethoxybenzoic acid, (-)-Epigallocatechin gallate; Downstream Products: Methyl 2,4-dimethoxybenzoate, Methyl 2-methoxybenzoate, Methyl 3-methoxybenzoate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Gallic acid (CAS 149-91-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11494-9 (accessed 2026-11-06).

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