[Code of Federal Regulations] [Title 27, Volume 1] [Revised as of April 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 27CFR21.50] [Page 500] TITLE 27--ALCOHOL, TOBACCO PRODUCTS AND FIREARMS CHAPTER I--ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY PART 21_FORMULAS FOR DENATURED ALCOHOL AND RUM--Table of Contents Subpart D_Specially Denatured Spirits Formulas and Authorized Uses Sec. 21.50 Formula No. 25. (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).