Oxidation stability test, diesel fuels

The expected life of a diesel fuel is indicated by the oxidation stability test (ASTM D-2276). The test measures how much gum and sediment will be deposited after conditioning the fuel at 120°C in the presence of oxygen for 16 h. It roughly corresponds to a years storage at 25°C. A result of less than 20 mg/L of sediment and gum after the test is considered acceptable for normal diesel. 

Diesel fuel and heating fuels should pass both oxidation and thermal stability tests. As shown in Table XII, the raw Wyodak H-Coal syncrude has a very poor oxidation stability but the hydrotreated Wyodak H-Coal syncrude has an excellent oxidation stability. The oxidation stability of hydrotreated Illinois H-Coal products is also excellent, even without additives. 

CEN (European Conunittee fa- Standardization), Brussels, Belgium. Various Standards EN 116 Diesel and Domestic Heating Fuels - Determination of Cold Filter Plugging Point. EN 14112 Fat and Oil Derivatives. Fatty Acid Methyl Esters (FAME). Determination of Oxidation Stability (Accelerated Oxidation Test) EN 14213 Heating Fuels. Fatty Add Methyl Esters (FAME). Requirements and Test Methods EN 14214 Automotive Fuels - Fatty Add Methyl Esters (FAME) fa- Diesel Engines - Requirements and Test Methods, EN 15751 Automotive Fuels. Fatty Add Methyl Ester (FAME) Fuel and Blends with Diesel Fuel. Determination of Oxidation Stability by Accelerated Oxidation Method. CEN, Brussels, Belgium. 

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