27 C.F.R. § 21.38
Formula No. 4
(a) Formula. To every 100 gallons of alcohol, or to every 100 gallons of rum of not less than 150 proof, add:
(b) Authorized uses. (1) As a solvent:
(2) Miscellaneous uses:
(a) Formula. To every 100 gallons of alcohol, or to every 100 gallons of rum of not less than 150 proof, add:
(b) Authorized uses. (1) As a solvent:
(2) Miscellaneous uses: