(a) General. Straight run gasoline is a mixture consisting predominantly (greater than 60 percent by volume) of C4, C5, C6, C7 and/or C8 hydrocarbons, and is either:
(1) A petroleum distillate coming straight from an atmospheric distillation unit without being cracked or reformed, or
(2) A condensate coming directly from an oil/gas recovery operation.
(b) API gravity. 72° minimum, 85° maximum.
(c) Reid vapor pressure (PSI). 15 maximum.
(d) Sulfur. 120 ppm maximum.
(e) Benzene. 1.1 percent by volume maximum.
(f) Distillation ( °F):
(1) 10 percent. 97 minimum, 158 maximum.
(2) 50 percent. 250 maximum.
(3) Final boiling point. 437 maximum.
[T.D. TTB-140, 81 FR 59462, Aug. 30, 2016]