27 CFR § 21.112-T2
n-Hexane
April 24, 2020
(a) General. Minimum 97 percent purity.
(b) Distillation range. No distillate should come over below 150 °F and none above 160 °F.
(c) Odor. Characteristic odor.
[T.D. TTB-140, 81 FR 59462, Aug. 30, 2016]