| 释义 |
crotonic, a. Chem.|krəʊˈtɒnɪk|
[f. Croton + -ic.]
Of or derived from croton oil; as in crotonic acid, C4H6O2, the second member of the acrylic series. So ˈcrotonate, a salt of crotonic acid. ˈcrotonol, a brown oil obtained from croton oil. ˈcrotonyl, the radical C4H7 of crotonic acid. ˈcrotonyˌlene, a hydro-carbon, C4H6 (liquid below 15° C.), homologous with allylene.
1838T. Thomson Chem. Org. Bodies 433 It owes its purgative qualities to..crotonic acid dissolved in the oil. 1873Williamson Chem. 302 The crotonate which has been extracted from the croton-seed oil. 1880E. Cleminshaw Wurtz' Atom. Th. 264 The tetratomic radicals, acetylene, allylene, and crotonylene, are known in a free state. |