27 C.F.R. § 21.66 Formula No. 38–C.
Title 27 - Alcohol, Tobacco Products and Firearms
(a) Formula. To every 100 gallons of alcohol add:
Ten pounds of menthol, U.S.P., and 1.25 gallons of formaldehyde solution, U.S.P. (b) Authorized uses. (1) As a solvent:
131. Dentifrices. 132. Mouth washes. (2) Miscellaneous uses:
812. Product development and pilot plant uses (own use only).
Title 27: Alcohol, Tobacco and Firearms
PART 21—FORMULAS FOR DENATURED ALCOHOL AND RUM
Subpart D—Specially Denatured Spirits Formulas and Authorized Uses
§ 21.66 Formula No. 38–C.