StacksVerified U.S. regulatory reference

27 CFR §21.68

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Formula. To every 100 gallons of alcohol add:
    1. (1)Six pounds of either boric acid, N.F., Polysorbate 80, N.F., or Poloxamer 407, N.F.; 1 1/3 pounds of thymol, N.F.; 1 1/3 pounds of chlorothymol, N.F. XII; and 1 1/3 pounds of menthol, U.S.P.; or
    2. (2)A total of at least 3 pounds of any two or more denaturing materials listed under Formula No. 38-B, plus sufficient boric acid, N.F., Polysorbate 80, N.F., or Poloxamer 407, N.F. to total 10 pounds of denaturant; or
    3. (3)Seven pounds of zinc chloride, U.S.P., 2.6 fluid ounces of hydrochloric acid, N.F., and a total of 3 pounds of any two or more of the denaturing materials listed under Formula No. 38-B.
  2. (b)Authorized uses.
    1. (1)As a solvent:
    2. (2)Miscellaneous uses: