释义 |
gallic acid /ˈɡalɪk /noun [mass noun] ChemistryAn 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.
Pyrogallol, tannic acid, and gallic acid were obtained from Zhunyi Reagents (Guizou, China)....- 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.
- Then, the paper is floated on a mixture containing silver nitrate and gallic acid.
OriginLate 18th century: gallic from Latin galla 'oak gall' (see gall3) + -ic. |