[Code of Federal Regulations] [Title 27, Volume 1] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 27CFR21.78] [Page 547] 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. 21.78 Formula No. 42. (a) Formula. To every 100 gallons of alcohol add: (1) Eighty grams of potassium iodide, U.S.P., and 109 grams of red mercuric iodide, N.F. XI; or (2) Ninety-five grams of thimerosal, U.S.P.; or (3) Seventy-six grams of any of the following: phenyl mercuric nitrate, N.F.; phenyl mercuric chloride, N.F. IX; or phenyl mercuric benzoate. (b) Authorized uses. (1) As a solvent: 430. Sterilizing and preserving solutions. (2) Miscellaneous uses: 812. Product development and pilot plant uses (own use only).