27 C.F.R. § 21.50 Formula No. 25.
Title 27 - Alcohol, Tobacco Products and Firearms
(a) Formula. To every 100 gallons of alcohol add:
Twenty pounds of iodine, U.S.P., and 15 pounds of either potassium iodide, U.S.P., or sodium iodide, U.S.P. (b) Authorized uses. (1) As a solvent:
230. Tinctures of iodine. 249. Miscellaneous external pharmaceuticals, 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
§ 21.50 Formula No. 25.