| 单词 |
colophon- |
| 释义 |
coloph-, colophon-
abbreviations of colophony, used as stems for names of related chemical substances, as ˈcolophene, (C20 H32) an oily colourless liquid obtained by distilling oil of turpentine with strong sulphuric acid. ˈcolophilene, Deville's name for the hydrocarbon obtained by treating hydrochlorate of colophene with baryta. coloˈpholic acid (see quot.). colophonate, a salt of a colophonic acid. coloˈphonic acids, the resinous acids present in colophony. ˈcolophonin (see quot.). ˈcolophonone, an oil produced by the dry distillation of colophony.
1863–72Watts Dict. Chem. I. 1086 Colophene is an aromatic oil..exhibiting by reflected light a dark indigo-blue iridescence. Ibid. 1087 Colopholic acid..the constituent of colophony which is least soluble in alcohol. 1838T. Thomson Chem. Org. Bodies 526 Rose..analyzed the colophonates of silver and lead. Ibid., A brown resin, possessing more powerful acid characters, to which Unverdorben has given the name of colophonic acid. 1863–72Watts Dict. Chem. I. 1087 Colophonic acids..pinic, pimaric, sylvic, and colopholic. 1879Ibid. 1st Suppl. 482 When old essence of resin..is washed with water and the wash-water is evaporated colophonin hydrate..is obtained. 1863–72Ibid. I. 1087 Colophonone..is colourless, mobile, highly refractive. |
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