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

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Example Sentences

See Examples For:

gallic acid

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 ● Feb. 23, 2024

By comparison, he added, other species of azolla that grow in Asia and Africa are between 20 and 69 grams, gallic acid equivalents per kilogram dry weight -- too high for humans to digest comfortably.

From Science Daily ● Feb. 23, 2024

The picture may be developed by a solution of gallic acid mixed with a very small quantity of an aqueous solution of acetic acid and nitrate of silver.

From Harper's Young People, December 2, 1879 An Illustrated Weekly by Various

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

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various

Lactate of iron, 15 grains; powdered gum arabic, 75 grains; powdered sugar, half a drachm; gallic acid, 9 grains; hot water, 3 ounces.

From Paper and Printing Recipes A Handy Volume of Practical Recipes, Concerning the Every-Day Business of Stationers, Printers, Binders, and the Kindred Trades by J. Sawtelle Ford

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