The Derived Cetane Number relates to the readiness of the fuel to self-ignite when exposed to the high temperatures and pressure in the diesel engine combustion chamber. The number is also indicative of the relative fuel stability. On-highway diesel fuels in the U.S. are required to have Cetane numbers of 40 or higher. Derived Cetane Number is evaluated in accordance with ASTM D6890.
ASTM D6751 Requirement: minimum cetane number of 47.