Editing Cetane number (section)

==Alternative fuels==
[[Biodiesel]] from vegetable oil sources have been recorded as having a cetane number range of 46 to 52, and animal-fat based biodiesels cetane numbers range from 56 to 60.<ref>{{cite web |title=Biodiesel Cetane Number Engine Testing Comparison to Calculated Cetane Index Number |url=http://www.biodiesel.org/resources/reportsdatabase/reports/gen/19940101_gen-297.pdf |url-status=dead |archive-url=https://web.archive.org/web/20070714042908/http://www.biodiesel.org/resources/reportsdatabase/reports/gen/19940101_gen-297.pdf |archive-date=2007-07-14 |access-date=2008-09-13 |website=www.biodiesel.org}}</ref>  [[Dimethyl ether]] is a potential diesel fuel as it has a high cetane rating (55-60) and can be produced as a [[biofuel]].<ref>{{cite book | last1 = Olah | first1 = G.A. | last2 = Goeppert | first2 = A. | last3 = Prakash | first3 = G.K. | author-link1 = George Andrew Olah | title = Beyond Oil and Gas: The Methanol Economy | url = https://archive.org/details/beyondoilgasmeth0000olah | url-access = registration | year = 2006 | chapter = 11}}</ref> Most simple ethers, including liquid ones, such as [[diethyl ether]] can be used as diesel fuels, although the lubricity can be of concern.