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Gallic acid 149-91-7 /manufacturer/low price/high quality/in stock
Cas No: 149-91-7
USD $ 12.0-13.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Gallic Acid anhydrous
Cas No: 149-91-7
USD $ 1.0-1.0 / Kilogram 1 Kilogram 10 Metric Ton/Month Hebei yanxi chemical co.,LTD. Contact Supplier
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Gallic acid
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Gallic acid
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149-91-7 Usage

Uses

Gallic acid is a trihydroxybenzoic acid found in many plants as either the free acid or in the esterified form of gallotannins and ellagitannins. It demonstrates antioxidant activity by scavenging 2,2-diphenyl-1-picrylhydrazyl and hydroxyl free radicals with IC50 values of 9.4 and 191 μM, respectively, and inhibiting microsomal lipid peroxidation with an IC50 value of 1.51 μM. Gallic acid is often used as a standard for determining the phenol content of various analytes by the Folin-Ciocalteau assay where results are reported in gallic acid equivalents.[Cayman Chemical]

Uses

antineoplastic, astringent, antibacterial

Health Hazard

Inhalation of dust may irritate nose and throat. Contact with eyes or skin causes irritation.

Fire Hazard

Flash point data for Gallic acid are not available. Gallic acid is probably combustible.

Purification Methods

Crystallise gallic from water. The tri-O-acetyl derivative has m 172o (from MeOH), and the anilide has m 207o(from EtOH). [Beilstein 10 H 470, 10 IV 1993.]

Definition

ChEBI: A trihydroxybenzoic acid in which the hydroxy groups are at positions 3, 4, and 5.

Reactivity Profile

Phenols, such as Gallic acid, do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has Ka = 1.3 x 10^[-10]). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (for example, by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid.

Uses

A cyclooxygease inhibitor substance found in plants.

Chemical Properties

Colorless crystalline needles or prisms obtained from nutgall tannins,gallic acid is soluble in water and alcohol and melts at 235 to 240 °C. Also known as trihydroxybenzoic acid, it is used in photography, tanning, ink manufacture and pharmaceuticals.

Air & Water Reactions

Sparingly water soluble

General Description

Odorless white solid. Sinks in water.
InChI:InChI=1/C7H6O5/c8-4-1-3(7(11)12)2-5(9)6(4)10/h1-2,8-10H,(H,11,12)

149-91-7 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Sigma-Aldrich (91215)  Gallicacid  certified reference material, TraceCERT® 149-91-7 91215-100MG 1,075.23CNY Detail
Alfa Aesar (B24887)  3,4,5-Trihydroxybenzoic acid, anhydrous, 99%    149-91-7 5000g 5116.0CNY Detail
Alfa Aesar (B24887)  3,4,5-Trihydroxybenzoic acid, anhydrous, 99%    149-91-7 1000g 2244.0CNY Detail
Alfa Aesar (B24887)  3,4,5-Trihydroxybenzoic acid, anhydrous, 99%    149-91-7 250g 705.0CNY Detail

149-91-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name gallic acid

1.2 Other means of identification

Product number -
Other names 3,4,5-trihydroxybenzenoic Acid

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food additives -> Flavoring Agents
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:149-91-7 SDS

149-91-7Related news

Unravelling the Gallic acid (cas 149-91-7) degradation pathway in bacteria: the gal cluster from Pseudomonas putida09/30/2019

Gallic acid (3,4,5‐trihydroxybenzoic acid, GA) is widely distributed in nature, being a major phenolic pollutant and a commonly used antioxidant and building‐block for drug development. We have characterized the first complete cluster (gal genes) responsible for growth in GA in a derivative of...detailed

Gallic acid (cas 149-91-7) mediated oxidation of pentachlorophenol by the Fenton reaction under mild oxidative conditions09/29/2019

BACKGROUND The present study demonstrates the decomposition of pentachlorophenol (PCP) by the Fenton reaction in the presence of gallic acid (GA). Unlike other studies, catalytic Fe2+ concentrations were used with respect to PCP in an effort to evaluate an environmentally benign Fenton system, s...detailed

Comparison of hypolipidemic activity of synthetic Gallic acid (cas 149-91-7)–linoleic acid ester with mixture of Gallic acid (cas 149-91-7) and linoleic acid, Gallic acid (cas 149-91-7), and linoleic acid on high-fat diet induced obesity in C57BL/6 Cr Slc mice09/28/2019

Hyperlipidemia is the major risk factors of heart disease such as atherosclerosis, stroke, and death. In the present study, we studied the effect of gallic acid (GA), linoleic acid (LA), mixture of GA and LA (MGL), and chemically synthesized gallic acid–linoleic acid ester (octadeca-9,12-dienyl...detailed

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