| 释义 |
Definition of gallic acid in English: gallic acidnounˈɡalɪkˈɡôlik mass nounChemistry An acid extracted from oak galls and other vegetable products, formerly used in making ink. 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 acidnounˈɡôlik Chemistry An acid extracted from oak galls and other vegetable products, formerly used in making ink. 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. |