CFR › Title 27 › Part 21 › §21.11527 CFR §21.115Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Distillation range. No distillate should come over below 340 °F. and none above 570 °F.(b)Flash point. 155 °F. minimum.