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单词 gallic acid
释义

Definition of gallic acid in English:

gallic acid

nounˈɡalɪkˈɡôlik
mass nounChemistry
  • An acid extracted from oak galls and other vegetable products, formerly used in making ink.

    〔化〕棓酸,五倍子酸,没食子酸

    Alternative name: 3,4,5-trihydroxybenzoic acid; chemical formula: C₆H₂(OH)₃COOH

    Example sentencesExamples
    • By washing the paper with a solution of gallic acid after the exposure, he produced a developed-out image.
    • Modern compositions use other unstable, albeit somewhat less hazardous, aromatic compounds such as gallic acid or the salts of aromatic acids including sodium salicylate and potassium benzoate.
    • The paper was then treated with gallic acid and then silver nitrate again.
    • Pyrogallol, tannic acid, and gallic acid were obtained from Zhunyi Reagents (Guizou, China).
    • Then, the paper is floated on a mixture containing silver nitrate and gallic acid.

Origin

Late 18th century: gallic from Latin galla 'oak gall' (see gall3) + -ic.

Definition of gallic acid in US English:

gallic acid

nounˈɡôlik
Chemistry
  • An acid extracted from oak galls and other vegetable products, formerly used in making ink.

    〔化〕棓酸,五倍子酸,没食子酸

    Alternative name: 3, 4, 5-trihydroxybenzoic acid; chemical formula: C₆H₂(OH)₃COOH

    Example sentencesExamples
    • Modern compositions use other unstable, albeit somewhat less hazardous, aromatic compounds such as gallic acid or the salts of aromatic acids including sodium salicylate and potassium benzoate.
    • Pyrogallol, tannic acid, and gallic acid were obtained from Zhunyi Reagents (Guizou, China).
    • Then, the paper is floated on a mixture containing silver nitrate and gallic acid.
    • By washing the paper with a solution of gallic acid after the exposure, he produced a developed-out image.
    • The paper was then treated with gallic acid and then silver nitrate again.

Origin

Late 18th century: gallic from Latin galla ‘oak gall’ (see gall) + -ic.

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更新时间:2024/11/11 9:14:24