Distillation

Definition

Distillation characteristics of diesel fuel are determined by its composition and are an indication of its suitability for use. The distillation characteristics of fuel are an indication of its volatility and potential to form explosive vapors and deposits during engine operation. The 50% distillation temperature is used with API Gravity to calculate Cetane Index, an approximation of Cetane Number.

Standard Test Method Used

ASTM D86

Reporting Measurement

Celsius

Amount of Sample Needed

200 mL

Test Limitation

Test not suitable for 100% Bio-diesel.