| 单词 | n-heneicosane |
| 释义 | > as lemmasn-heneicosane Any of the hydrocarbons of the alkane series having twenty-one carbon atoms, esp. the unbranched isomer (also n-heneicosane), a waxy solid which is a component of petroleum and of safflower and some other plant oils.Formula: C21H44. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkanes > straight-chained by number of carbon atoms > twenty-one heneicosane1885 1885 T. Carnelley Physico-chemical Constants I. ii. i. 86/1 (table) Heneicosane. 1945 A. N. Sachanen Chem. Constituents Petroleum iv. 232 The heneicosanes substituted in position 11 (C10H21.CHR.C10H21) have low melting points (below −7°C). 1970 Biochimica et Biophysica Acta 202 387 The mass spectrum and gas–liquid chromatographic behaviour of the hydrogenated compound were identical to those of authentic n-heneicosane. 2018 @sstleo_87 21 Mar. in twitter.com (accessed 22 May 2018) A recent study at North Carolina State University has identified the specific chemical (heneicosane) royal termites use to ‘announce’ their presence. < as lemmas |
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