单词 | eicosane |
释义 | > as lemmasˈeicosane ˈeicosane n. Brit. /ˈʌɪkə(ʊ)seɪn/ , U.S. /ˈaɪkəˌseɪn/ [-ane suffix2 2] a hydrocarbon, C20H42, of the paraffin (alkane) series, esp. the normal isomer.ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkanes > straight-chained by number of carbon atoms > twenty eicosane1889 1889 G. M'Gowan tr. A. Bernthsen Text-bk. Org. Chem. 34 (table) C20H42. Eicosane. 1889 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) II. 746/1 Icosane C20H42... Formed by reduction of the dichloride of heptyl tridecyl ketone with HI and P. 1948 A. W. Ralston Fatty Acids xi. 882 The following are the melting and boiling points which have been reported for the higher normal saturated hydrocarbons: nonadecane, C19H40, 32°, —; eicosane, C20H42, 38°, b0·5 148°; [etc.]. 1966 Nomencl. Org. Chem. (I.U.P.A.C.) (ed. 2) A. 6 The first four saturated unbranched acyclic hydrocarbons are called methane, ethane, propane and butane. Names of the higher members of this series consist of a numerical prefix and the termination ‘-ane’... Examples:..6 Hexane. 7 Heptane... 20 Eicosane. < as lemmas |
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