Range: 1-50
Unit: g/m3
Objects: diesel fuel
The method provides a basis for the estimation of the storage stability, under the conditions of this test, of middle-distillate Fuels with an initial building point above approximately 175 0C and a 90 % v/v recovery point below 370 0C. Is not applicable to fuels containing residual components, or any significant component from a non-petroleum source.
Summary of Test Method: A test portion of filtered middle-distillate fuel is aged at 95 0C for 16 h while bubbling oxygen through the sample. After ageing, the sample is cooled to approximately room temperature before filtering to obtain the quantity of filterable insolubles. Adherent insolubles are then removed from the oxidation cell with trisolvent. The and associated glassware trisolvent is evaporated to obtain the quantity of adherent insolubles. The sum of the filterable and adherent insolubles is reported as total insolubles.
Requirements for oxidation stability of diesel fuel according to EN 590 is max. 25 g/m3.