| 释义 |
terpin Chem.|ˈtɜːpɪn|
Also -ine.
[f. as terpene + -in1.]
A derivative of pinene and other terpenes, C10H18(OH)2, of which two modifications are known, cisterpin, melting at 103° C., and transterpin, at 156° C. terpin-hydrate, a crystalline compound obtained by shaking turpentine-oil with alcohol acidified with sulphuric or nitric acid.
1848Chem. Gaz. 1 Aug. 296 On the so-called Hydrate of Oil of Turpentine... Its name had consequently to be altered, and the author [Dr. C. List] adopts that of terpine, proposed for it by Berzelius. 1868Watts Dict. Chem. V. 923 Terpin-hydrate usually crystallises in large rhombic prisms. 1894Morley & Muir Watts' Dict. Chem. IV. 665/2 Terpin is best known in the form of its hydrate,..a beautifully crystalline compound which on heating to 100° loses water and leaves terpin as a vitreous mass.
Hence ˈterpinene, a terpene occurring in oil of cardamom; terˈpineol, formerly (and still in Pharmacy) ˈterpinol: see quots.; terˈpinolene, a terpene obtained by Wallach in 1885.
1848Chem. Gaz. 1 Aug. 297 Terpinole is a colourless, very liquid oil, with the agreeable odour of hyacinths. Ibid. 298 When terpine is heated with concentrated hydriodic acid, it is converted into terpinole. 1857Miller Elem. Chem. III. vii. §1. 442 Terpinol. 1894Morley & Muir Watts' Dict. Chem. IV. 665/1 Terpineol..is a viscous liquid, having an odour of white lilac. 1902Pond tr. Heusler's Chem. Terpenes 105 Terpinolene is obtained by boiling terpine hydrate, terpineol, or cineole with dilute sulphuric acid. Ibid. 112 Terpinene escaped the notice of the earlier investigators because they assumed that it was identical with dipentene. Wallach recognized it as a definite terpene. Ibid. 254 The name terpineol was formerly used to designate a substance which to-day is recognized as a mixture of isomeric alcohols, C10H17OH. |