Definition of Gallic acid. Meaning of Gallic acid. Synonyms of Gallic acid

Here you will find one or more explanations in English for the word Gallic acid. Also in the bottom left of the page several parts of wikipedia pages related to the word Gallic acid and, of course, Gallic acid synonyms and on the right images related to the word Gallic acid.

Definition of Gallic acid

Gallic acid
Gallic Gal"lic (277), a. [From Gall the excrescence.] Pertaining to, or derived from, galls, nutgalls, and the like. Gallic acid (Chem.), an organic acid, very widely distributed in the vegetable kingdom, being found in the free state in galls, tea, etc., and produced artificially. It is a white, crystalline substance, C6H2(HO)3.CO2H, with an astringent taste, and is a strong reducing agent, as employed in photography. It is usually prepared from tannin, and both give a dark color with iron salts, forming tannate and gallate of iron, which are the essential ingredients of common black ink.

Meaning of Gallic acid from wikipedia

- Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid with the formula C6H2(OH)3CO2H. It is classified as a phenolic acid...
- sulfuric acid. 0.05 g of gallic acid is used for every 10 mls of sulfuric acid. The same ratio of gallic acid n-propyl ester in sulfuric acid can also...
- to distinguish it from acide gallique (gallic acid). The molecule structure resembles to that of two gallic acid molecules being ****embled "head to tail"...
- spontaneously rearranges to gallic acid. Shikimic acid is a precursor for: indole, indole derivatives and aromatic amino acid tryptophan and tryptophan...
- name. Fermentation or hydrolysis of the extract releases glucose and gallic acid, which yields a darker purple-black ink, due to the formation of iron...
- times. Tannins have molecular weights ranging from 500 to over 3,000 (gallic acid esters) and up to 20,000 Daltons (proanthocyanidins). There are three...
- raspberry ellagitannin, on the other hand, with its 14 gallic acid moieties (most in ellagic acid-type components), and more than 40 phenolic hydroxyl groups...
- the name gallic acid, for a phenolic compound found in these formations 'Gallic' is also a proper noun naming the following ships: SS Gallic (1894), a...
- the manner it was first prepared by Scheele (1786): heating gallic acid. Presently gallic acid is obtained from tannin. Heating induces decarboxylation:...
- (FCR) or Folin's phenol reagent or Folin–Denis reagent, also called the gallic acid equivalence method (GAE), is a mixture of phosphomolybdate and phosphotungstate...