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gallic acid
noun
, Chemistry.
- 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.
gallic acid
noun
- 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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Word History and Origins
Origin of gallic acid1
First recorded in 1785–95, gallic acid is from French acide gallique
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Word History and Origins
Origin of gallic acid1
C18: from French gallique; see gall ³
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Example Sentences
A mixture of the two esters melted within the limits given for the ester of gallic acid.
From Project Gutenberg
The melting point behavior of the acid corresponds with that of gallic acid; it melted with decomposition at about 230°.
From Project Gutenberg
While the tests leading to the identification of gallic acid were being made, another series of experiments was in progress.
From Project Gutenberg
For the sake of comparison, an ester was made from gallic acid obtained from another source and the two agreed in properties.
From Project Gutenberg
All appeared to be impure gallic acid which had become brown by absorption of oxygen.
From Project Gutenberg
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