27 C.F.R. § 21.52 Formula No. 27.
Title 27 - Alcohol, Tobacco Products and Firearms
(a) Formula. To every 100 gallons of alcohol add:
One gallon of rosemary oil, N.F. XII, and 30 pounds of camphor, U.S.P. (b) Authorized uses. (1) As a solvent:
210. External pharmaceuticals, not U.S.P. or N.F. 243. Liniments, U.S.P. or N.F. (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
§ 21.52 Formula No. 27.