27 CFR § 21.50
Formula No. 25
April 24, 2020
(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).