27 CFR § 21.100
n-Butyl alcohol
April 24, 2020
(a) Acidity (as acetic acid). 0.03 percent by weight maximum.
(b) Color. Colorless.
(c) Dryness at 20 °C. Miscible without turbidity with 10 volumes of 60° Bé1. gasoline.
(d) Odor. Characteristic odor.
(e) Specific gravity at 20 °/20 °C. 0.810 to 0.815.
[T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]