Section 21.130-T - Straight run gasoline(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.