Section 21.68 - Formula No. 38-F(a)Formula. To every 100 gallons of alcohol add: (1) Six pounds of either boric acid, N.F., Polysorbate 80, N.F., or Poloxamer 407, 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., Polysorbate 80, N.F., or Poloxamer 407, 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: 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).