单词 | scheeles green |
释义 | Scheele's greenn. Chemistry. A hydrated form of copper arsenite, Cu3(AsO3)2.xH2O, formerly used as a pigment in calico printing and wallpaper manufacture. ΘΚΠ the world > matter > chemistry > organic chemistry > organic dyes > [noun] > colouring green Scheele's green1819 phthalocyanine1933 phthalocyanine green1942 phthalo1979 1819 W. T. Brande Man. Chem. v. 274 Mixed with a solution of sulphate of copper, a precipitate of a fine apple-green colour falls, called from its discoverer, Scheele's green, and useful as a pigment. 1935 Discovery Sept. 261/2 The dark green background of a so-called Holbein portrait was recently found, on..analysis.., to consist of Scheele's green, a copper arsenate discovered in 1778. 1967 Jrnl. Colour Group 92/2 Scheele's green and emerald green, both copper arsenates, lost their popularity [with artists] because of their poisonous effects. 1973 J. D. Smith in J. C. Bailar et al. Comprehensive Inorg. Chem. II. xxi. 609 Yellow silver arsenite..and copper arsenite (Scheele's green) may be precipitated from neutral solutions. This entry has not yet been fully updated (first published 1982; most recently modified version published online June 2018). < n.1819 |
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