27 CFR § 21.79
Formula No. 44
April 24, 2020
(a) Formula. To every 100 gallons of alcohol add:
Ten gallons of n-butyl alcohol
(b) Authorized uses.
(1) As a solvent:
430. Sterilizing and preserving solutions.
(2) Miscellaneous uses:
812. Product development and pilot plant uses (own use only).