butine Chem.
(ˈbjuːtaɪn, -iːn)
[ad. G. butin, f. L. būt-yrum butter n.1 + -ine5.]
† 1. The name given by W. Heintz (Ann. der Physik und Chem. (1853) XC. 151) to a substance present in butter. Obs.
| 1867 Bloxam Chem. 582 Butter..contains also butine, which yields glycerine and butic acid (HO.C40H39O3) when saponified. |
2. Orig., any of the four unsaturated unbranched hydrocarbons with the formula C4H6; later restricted to the two isomers that have a triple bond, those with two double bonds being called butadiene.
The word is now obsolescent, being replaced by butyne.
| 1884 Roscoe & Schorlemmer Treat. Chem. III. ii. 463 Butine, C{b2}H2CH.CH{b2}CH2. When erythrite, C4H6(OH)4, is heated with concentrated formic acid to 230°, butine is formed. 1888 Amer. Chem. Jrnl. X. 431 The fourth butine, methylisoallylene, was the subject of this investigation. 1889 G. M'Gowan tr. Bernthsen's Text-bk. Org. Chem. 57 Crotonylene or Butine, CH2{b2}CH{b1}CH{b2} CH2, is contained in illuminating gas. Ibid., Pyrrolylene, C4H6, from pyrrolidine, is probably identical with the butine from erythrite. 1895 Thomson & Bloxam Bloxam's Chem. (ed. 8) 524 The hydrocarbon C4H6 (butine) can exist in two forms, each of which will have a pair of trebly-linked carbon atoms. 1934 Chem. Abstr. XXVIII. 2321 EtI and NaC{vddd}CH in liquid NH3 at -45° give 78% of 1-butine. |