单词 | chrysene |
释义 | chrysenen. Chemistry. A solid hydrocarbon, C18H12, occurring in crystalline form in the highest boiling fractions of coal tar, and in other substances, variable in colour and exhibiting violet fluorescence. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > polynuclear aromatic hydrocarbons green oil1607 paranaphthalene1838 anthracene1840 oxanthracene1862 chrysene1864 cerulein1866 acenaphthene1868 naphthoquinone1870 anthracene oil1873 azulene1874 acenaphthylene1875 ionene1894 1864 Chem. News 10 244/1 Laurent's pyren, I am inclined to think, was merely chrysen containing an admixture of paraffin. 1864 Chem. News 10 244/2 Chrysen compounds. 1871 Jrnl. Chem. Soc. 24 692 The chrysene employed in this research was extracted from the mixture of solid hydro-carbons which have a higher boiling point than anthracene, and form the latter portion of the distillate from coal tar. 1943 Endeavour Jan. 30/1 The..compound presents a rough resemblance to..chrysene. 1957 Encycl. Brit. V. 665/1 Chrysene, C18H12, crystallizes in colourless plates or octahedra (from benzene), which exhibit a violet fluorescence. This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2020). > as lemmasˈchrysene ˈchrysene n. Brit. /ˈkrʌɪsiːn/ , U.S. /ˈkraɪˌsin/ a crystalline hydrocarbon (C18H12) of the Anthracene group, obtained in bright yellow glistening scales.Π c1865 H. Letheby in J. Wylde Circle of Sci. I. 118/2 Among the first are..Chrysene. 1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 758 Chrysene, a solid, resinous, orange-coloured body. 1880 Libr. Universal Knowl. VI. 75 The most powerfully fluorescent bodies known are..chrysogen, chrysene. < n.1864 as lemmas |
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