§ 21.68
Formula No. 38-F.
(a) Formula. To every 100 gallons of alcohol add:

(1) Six pounds of either boric acid, N.F., or Polysorbate 80, N.F.; 11/3 pounds of thymol, N.F.; 11/3 pounds of chlorothymol, N.F. XII; and 11/3 pounds of menthol, U.S.P.; or
(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., or Polysorbate 80, N.F., to total 10 pounds of denaturant; or
(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.
(b) Authorized uses. (1) As a solvent:

132. Mouth washes.
210. External pharmaceuticals, not U.S.P. or N.F.
244. Antiseptic solutions, U.S.P. or N.F.
(2) Miscellaneous uses:

812. Product development and pilot plant uses (own use only).