出典:Wiktionary
出典:『Wiktionary』 (2009/11/27 06:58 UTC 版)
isocetane (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/03 18:42 UTC 版)
Isocetane (2,2,4,4,6,8,8-heptamethylnonane) is a highly branched alkane used as a reference in determining the cetane number of diesel. It is given a cetane number of 15. Isocetane replaced 1-methylnaphthalene as the lower reference for cetane number (1-methylnaphthalene has cetane number zero) owing to the expense of 1-methylnaphthalene, and difficulty in safe handling.