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cetane number

   Also found in: Dictionary/thesaurus, Wikipedia 0.02 sec.
cetane number
a measure of the quality of a diesel fuel expressed as the percentage of cetane in a mixture of cetane and 1-methylnapthalene of the same quality as the given fuel

cetane number [′sē‚tān ‚nəm·bər]
(chemical engineering)
The percentage by volume of cetane (cetane number 100) in a blend with α-methylnaphthalene (cetane number 0); indicates the ability of a fuel to ignite quickly after being injected into the cylinder of an engine.


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We fully expect the diesel being used to operate the governor's vehicle will validate the ultra-clean characteristics of Fischer-Tropsch fuels, which have no detectable sulfur or aromatics, are biodegradable and have a high cetane number.
The California reference fuel specification includes requirements such as 10% maximum aromatics content, a minimum cetane number of 48, and 15 parts-per-million (ppm) sulfur content.
The high cetane number of the diesel fuel will help meeting future more stringent specifications.
 
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