请输入您要查询的英文单词:

 

单词 chrysene
释义

chrysenen.

/ˈkrʌɪsiːn/
Forms: Also chrysen.
Etymology: < French chrysène (A. Laurent 1837, in Ann. de Chimie LXVI. 137), < chrys- comb. form + -ene comb. form.
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 lemmas

ˈchrysene
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.
extracted from chrys-comb. form
<
n.1864
as lemmas
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/1/12 0:25:43