###### Editorial Note on Part 21

#### Editorial Notes:

Nomenclature changes to part 21 appear by T.D. ATF-435, 66 FR 5475, Jan. 19, 2001.

Nomenclature changes to part 21 appear by 81 T.D. TTB-140, 81 FR Aug. 30, 2016.

#### § 21.151 List of denaturants authorized for denatured spirits.

Following is an alphabetical listing of denaturants authorized for use in denatured spirits:

| Acetaldehyde | S.D.A. 29. |
| --- | --- |
| Acetone, U.S.P | S.D.A. 23-A, 23-H. |
| Acetaldol | C.D.A. 18. |
| Alkylate | C.D.A. 20. |
| Almond oil, bitter, N.F.X | S.D.A. 38-B. |
| Alpha Terpineol | S.D.A. 38-B. |
| Ammonia, aqueous | S.D.A. 36. |
| Ammonia solution, strong, N.F | S.D.A. 36. |
| Anethole, N.F | S.D.A. 38-B. |
| Anise oil, N.F | S.D.A. 38-B. |
| Bay oil (myrcia oil), N.F.XI | S.D.A. 38-B, 39-D. |
| Benzaldehyde, N.F | S.D.A. 38-B. |
| Bergamot oil, N.F.XI | S.D.A. 38-B. |
| Boric acid, N.F | S.D.A. 38-F. |
| Brucine alkaloid | S.D.A. 40. |
| Brucine sulfate, N.F.IX | S.D.A. 40. |
| *n*-Butyl alcohol | S.D.A. 44. |
| *tert*-Butyl alcohol | S.D.A. 39-B, 40, 40-A, 40-B, 40-C. |
| Camphor, U.S.P | S.D.A. 38-B. |
| Caustic soda, liquid | S.D.A. 36. |
| Cedar leaf oil, U.S.P.XIII | S.D.A. 38-B. |
| Chlorothymol, N.F.XII | S.D.A. 38-B, 38-F. |
| Cinnamic aldehyde (cinnamaldehyde), N.F.IX | S.D.A. 38-B. |
| Cinnamon oil, N.F | S.D.A. 38-B. |
| Citronella oil, natural | S.D.A. 38-B. |
| Clove oil, N.F | S.D.A. 38-B. |
| Coal tar, U.S.P | S.D.A. 38-B. |
| Cornmint oil | S.D.A. 38-B. |
| Cyclohexane | S.D.A. 3-A. |
| Denatonium benzoate, N.F. | S.D.A. 1, 40-B. |
| Diethyl phthalate | S.D.A. 39-B, 39-C. |
| Distilled lime oil | S.D.A. 38-B. |
| Ethyl acetate | C.D.A. 35; S.D.A. 29, 35-A. |
| Ethyl ether | S.D.A. 13-A, 19, 32. |
| Ethyl tertiary butyl ether | C.D.A. 20. |
| Eucalyptol, N.F.XII | S.D.A. 37, 38-B. |
| Eucalyptus oil, N.F | S.D.A. 38-B. |
| Eugenol, U.S.P | S.D.A. 38-B. |
| Formaldehyde solution, U.S.P | S.D.A. 38-D. |
| Gasoline | C.D.A. 18, 19; S.D.A. 28-A. |
| Gasoline, unleaded | C.D.A. 18, 19, 20; S.D.A 28-A. |
| Glycerin (Glycerol), U.S.P | S.D.A. 31-A. |
| Green soap, U.S.P | S.D.A. |
| Guaiacol, N.F.X | S.D.A. 38-B. |
| Heptane | C.D.A. 18, 19; S.D.A. 2-B, 28-A. |
| Hexane | S.D.A. 2-B. |
| *n*-Hexane | S.D.A. 2-B. |
| High octane denaturant blend | C.D.A. 20. |
| Hydrochloric acid, N.F | S.D.A. 38-F. |
| Iodine, U.S.P | S.D.A. 25, 25-A. |
| Isopropyl alcohol | S.D.A. 3-C. |
| Kerosene | C.D.A. 18, 19, 20. |
| Kerosene (deodorized) | C.D.A. 18, 19, 20. |
| L(-)-Carvone | S.D.A. 38-B. |
| Lavender oil, N.F | S.D.A. 38-B. |
| Lemon oil | S.D.A. 38-B. |
| Menthol, U.S.P | S.D.A. 37, 38-B, 38-D, 38-F. |
| Methyl alcohol | S.D.A. 1, 3-A, 30. |
| Methylene blue, U.S.P | S.D.A. 4; S.D.R. 4. |
| Methyl isobutyl ketone | C.D.A. 18, 19; S.D.A. 1, 23-H. |
| Methyl *n*-butyl ketone | C.D.A. 18, 19; S.D.A. 1. |
| Methyl salicylate, N.F | S.D.A. 38-B |
| Methyl tertiary butyl ether | C.D.A. 20. |
| Mustard oil, volatile (allyl isothiocyanate), U.S.P.XII | S.D.A. 38-B. |
| Naphtha | C.D.A. 20. |
| Natural gasoline | C.D.A. 20. |
| Nicotine solution | S.D.A. 4; S.D.R. 4. |
| Nitropropane, mixed isomers of | C.D.A. 18, 19; S.D.A. 1. |
| Peppermint oil, N.F | S.D.A. 38-B. |
| Peppermint oil, terpeneless | S.D.A. 38-B. |
| Phenol, U.S.P | S.D.A. 38-B. |
| Phenyl salicylate (salol), N.F.XI | S.D.A. 38-B. |
| Pine needle oil, dwarf, N.F. | S.D.A. 38-B. |
| Pine oil, N.F. | S.D.A. 38-B. |
| Poloxamer 407, N.F. | S.D.A. 38-F. |
| Polysorbate 80, N.F | S.D.A. 38-F. |
| Potassium hydroxide | S.D.A. 36. |
| Potassium iodide, U.S.P | S.D.A. 25, 25-A. |
| Pyronate | C.D.A. 18. |
| Quassin | S.D.A. 40. |
| Quinine bisulfate, N.F.XI | S.D.A. 39-D. |
| Quinine sulfate, U.S.P | S.D.A. 39-D. |
| Raffinate | C.D.A. 20. |
| Rosemary oil, N.F. XII | S.D.A. 38-B. |
| Rubber hydrocarbon solvent | C.D.A. 18, 19, 20; S.D.A. 2-B, 28-A. |
| Safrole | S.D.A. 38-B. |
| Sassafras oil, N.F.XI | S.D.A. 38-B. |
| Shellac (refined) | S.D.A. 45. |
| Soap, hard, N.F.XI | S.D.A. 31-A. |
| Sodium iodide, U.S.P | S.D.A. 25, 25-A. |
| Sodium salicylate, U.S.P | S.D.A. 39-D. |
| Spearmint oil, N.F | S.D.A. 38-B. |
| Spearmint oil, terpeneless | S.D.A. 38-B. |
| Spike lavender oil, natural | S.D.A. 38-B. |
| Storax, U.S.P | S.D.A. 38-B. |
| Straight run gasoline | C.D.A. 20. |
| Sucrose octaacetate | S.D.A. 40-A. |
| Thyme oil, N.F.XII | S.D.A. 38-B. |
| Thymol, N.F | S.D.A. 37, 38-B, 38-F. |
| Tolu balsam, U.S.P | S.D.A. 38-B. |
| Toluene | C.D.A. 12-A; S.D.A. 2-B. |
| Turpentine oil, N.F.XI | S.D.A. 38-B. |
| Vinegar | S.D.A. 18. |
| Zinc chloride, U.S.P | S.D.A. 38-F. |

Denaturants Authorized for Completely Denatured Alcohol (C.D.A), Specially Denatured Alcohol (S.D.A.), and Specially Denatured Rum (S.D.R.)

[T.D. ATF-133, 48 FR 24673, June 2, 1983, as amended by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001; T.D. TTB-140, 81 FR 59463, Aug. 30, 2016]