Gallic acid CAS:149-91-7
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Gallic acid CAS:149-91-7

Gallic acid (GA) is a component of hydrolyzable tannins, also known as gallic acid, chemical name 3,4,5-trihydroxybenzoic acid. The content of gallic acid in Yunnan Pu'er tea is relatively high.
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  • 149-91-7

  • bosschemical

  • 149-91-7

Gallic acid Basic information
Product Name: Gallic acid
Synonyms: Gallic acid, 98% 250GR;Gallic acid, 98% 5GR;Gallic acid 0;3,4,5-Trihydroxybenzoic acid, anhydrous 99%;Gallic acid, 5-Carboxybenzene-1,2,3-triol;BETZ 0276;GALLIC ACID;GALLIC ACID-1-HYDRATE
CAS: 149-91-7
MF: C7H6O5
MW: 170.12
EINECS: 205-749-9
Product Categories: chemical reagent;pharmaceutical intermediate;phytochemical;reference standards from Chinese medicinal herbs (TCM).;standardized herbal extract;Fine chemicals;Pharmaceutical Intermediates;Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts;Food additive,Antioxidant anticorrosive;Inhibitors
Mol File: 149-91-7.mol
Gallic acid Structure
Gallic acid Chemical Properties
Melting point 251 °C (dec.) (lit.)
Boiling point 259.73°C (rough estimate)
density 1.694
refractive index 1.5690 (estimate)
storage temp. 2-8°C
pka 4.41(at 25℃)
form Powder
color Off-white
Water Solubility 12 g/L cold water
Merck 144,345
BRN 2,050,274
Items Specification
Assay(HPLC) ≥98%
Appearance White fine powder
Ash ≤5.0%
Moisture ≤5.0%
Heavy metals ≤10ppm
As ≤2.0ppm
Lead ≤2.0ppm

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