ASTM D20 Standard Test Method for Distillation of Road Tars
1. Scope
1.1 This test method covers the distillation of road tars.
1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
E 1 Specification for ASTM Thermometers
3. Summary of Test Method
3.1 A 100-g sample is distilled at a controlled rate from a 300-mL flask into tared receivers. The masses of distillate fractions at a series of specified temperatures and of residue at the maximum specified temperature are determined. If desired, the residue and distillates may be used for further testing.
4. Significance and Use
4.1 The distillation test separates tar into fractions according to a series of specified temperatures.
