| 单词 |
gallocyanine |
| 释义 |
gallocyanine Chem.|ˌgæləʊˈsaɪəniːn, -ɪn|
Also -in.
[a. F. gallocyanine (H. Kœchlin 1882, in Bull. Soc. Chim. XXXVIII. 97, 162), f. gallo-2 + cyanine.]
A green crystalline substance, C15H12N2O5, obtained from gallic acid and used as a bluish-violet mordant dye for wool and cotton and in calico-printing; also, any of a group of structurally similar dyes of the oxazine series that are derived from gallic acid.
1883H. Kœchlin in Chem. News 13 Apr. 170/1 By allowing an alcoholic solution of nitroso-dimethylaniline hydrochlorate to react in heat upon the tannins, as upon gallic acid, there are obtained violet colouring-matters, verging more or less upon a blue according to the nature of the tannin employed. These colouring-matters..the author names gallo-cyanines. 1893E. Knecht et al. Man. Dyeing II. vii. 624 Gallocyanin yields a bright blue-violet shade, which resists light, soap, and acids very well, but is not fast to soda. 1956Hickinbottom & Garwood in E. H. Rodd Chem. Carbon Compounds IIIb. xii. 781 The so-called gallocyanine dyes, mordant dyes of the oxazine series, largely used in calico printing. 1958J. R. Baker Princ. Biol. Microtechnique xii. 242 A basic dye may be used..to obtain an approximation to the amount of DNA in a nucleus or of RNA in a nucleolus or in the cytoplasm. A mordant-dye, chrome alum/gallocyanine..is particularly recommended for this purpose. 1960Howard & Ramage in E. H. Rodd Chem. Carbon Compounds IVc. xvii. 1546 The gallocyanines..are important for application in calico printing, with chromium salts and tannin mordant. |
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