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Nomenclature changes to part 20 appear by T.D. ATF-235, 66 FR 5473, Jan. 19, 2001, and T.D. ATF-463 and T.D. ATF-462, 66 FR 42733, 42736, Aug. 15, 2001.
A proprietary solvent made pursuant to this formula shall be made with alcohol denatured in accordance with S.D.A. Formula No. 1, 3-A, or 3-C and shall contain, for every 100 parts (by volume) of S.D.A.:
(a) No less than 1 part (by volume) of one or any combination of the following: Gasoline, unleaded gasoline, heptane, or rubber hydrocarbon solvent, and
(b) No less than 3 parts (by volume) of one or any combination of the following: Ethyl acetate (equivalent to 85 percent ester content, as defined in § 21.107 of this chapter), methyl isobutyl ketone, methyl n-butyl ketone, tert-butyl alcohol, sec-butyl alcohol, nitropropane (mixed isomers), ethylene glycol monoethyl ether, or toluene.
[T.D. TTB-140, 81 FR 59457, Aug. 30, 2016]