ASTM D2569 Standard Test Method for Distillation of Pitch
3. Summary of Test Method
3.1 A 100-g sample is distilled from an electrically heated flask in a shield at a designated rate. The weight of distillate fractions at specified temperatures and the time required to collect the main fraction are recorded.
4. Significance and Use
4.1 In usual practice, most of the oils distilling below 360°C are removed in the manufacture of high-softening-point pitches. Excessive distillation in this range may indicate an abnormal product which could cause some problems of fuming and instability in use.
