gallic acid

American  

noun

Chemistry.

1. a white or yellowish, crystalline, sparingly water-soluble solid, C 7 H 6 O 5 , obtained from nutgalls, used chiefly in tanning and in ink dyes.

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gallic acid British  

noun

1. a colourless crystalline compound obtained from tannin: used as a tanning agent and in making inks, paper, and pyrogallol; 3,4,5-trihydroxybenzoic acid. Formula: C 6 H 2 (OH) 3 COOH

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Etymology

Origin of gallic acid

First recorded in 1785–95, gallic acid is from French acide gallique

Example Sentences

The researchers determined that Carolina azolla has a total phenolic content of about 4.26 grams, gallic acid equivalents per kilogram dry weight.

From Science Daily

Raspberries are also a rich source of the flavonoids quercetin and gallic acid, which have been shown to boost heart health and prevent obesity and age-related decline.

From Time

It turns out that these foods and flavorings share in common some chemicals — pyrogallol and gallic acid — that the researchers believe are responsible for damaging the DNA and setting off p53.

From Time

It contains gallic acid and tannin, and is used for dyeing drab.

From Project Gutenberg

In my experience ergot in combination with gallic acid and dilute sulphuric acid has been very efficient.

From Project Gutenberg