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单词 pentadecane
释义

pentadecanen.

Brit. /ˈpɛntədᵻkeɪn/, U.S. /ˈpɛn(t)ədəˌkeɪn/
Origin: Formed within English, by derivation. Etymons: penta- comb. form, deca- comb. form, -ane suffix2 2
Etymology: < penta- comb. form + deca- comb. form + -ane suffix2 2. Compare French pentadécane (1886 or earlier), German Pentadecan (1903 or earlier), and also Byzantine Greek πενταδεκα- , variant (in πενταδεκαέτης ) of ancient Greek πεντεκαιδεκα- , combining form (in e.g. πεντεκαιδεκαετής fifteen years old) of πεντεκαίδεκα fifteen. Compare pentadecyl n., pentadecyne n.
Chemistry.
Any of a series of saturated hydrocarbons (alkanes) with the formula C15H32, esp. (also n- pentadecane) the unbranched isomer, CH3(CH2)13CH3, a liquid present in petroleum.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkanes > straight-chained by number of carbon atoms > fifteen
pentadecane1872
1872 H. Watts Dict. Chem. VI. 903 Pentadecane,..obtained from American petroleum.
1926 E. W. Washburn et al. Internat. Crit. Tables Numerical Data I. 258 (table) n-Pentadecane..[melting point] 10 [boiling point] 270.5.
1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) ii. 30 From pentane..to pentadecane..we have colourless liquids which are odourless when pure.
1975 Nature 20 Nov. 194/1 They comprise a vast range of saturated and unsaturated hydrocarbons and their derived alcohols and aldehydes (ranging from hexenal and tridecene to pentadecane).
2003 Columbus (Ohio) Dispatch 14 Jan. 5A The HemaCool units use three chemicals—tetradecane, pentadecane and hexadecane—that, as blood warms, absorb the heat and keep the blood cool.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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n.1872
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