What is the denaturing of alcohol?no_redirect=1

§ 21.151 List of denaturants authorized for denatured spirits.

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

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

AcetaldehydeS.D.A. 29.
Acetone, U.S.PS.D.A. 23-A, 23-H.
AcetaldolC.D.A. 18.
AlkylateC.D.A. 20.
Almond oil, bitter, N.F.XS.D.A. 38-B.
Alpha TerpineolS.D.A. 38-B.
Ammonia, aqueousS.D.A. 36.
Ammonia solution, strong, N.FS.D.A. 36.
Anethole, N.FS.D.A. 38-B.
Anise oil, N.FS.D.A. 38-B.
Bay oil (myrcia oil), N.F.XIS.D.A. 38-B, 39-D.
Benzaldehyde, N.FS.D.A. 38-B.
Bergamot oil, N.F.XIS.D.A. 38-B.
Boric acid, N.FS.D.A. 38-F.
Brucine alkaloidS.D.A. 40.
Brucine sulfate, N.F.IXS.D.A. 40.
-Butyl alcoholS.D.A. 44.
-Butyl alcoholS.D.A. 39-B, 40, 40-A, 40-B, 40-C.
Camphor, U.S.PS.D.A. 38-B.
Caustic soda, liquidS.D.A. 36.
Cedar leaf oil, U.S.P.XIIIS.D.A. 38-B.
Chlorothymol, N.F.XIIS.D.A. 38-B, 38-F.
Cinnamic aldehyde (cinnamaldehyde), N.F.IXS.D.A. 38-B.
Cinnamon oil, N.FS.D.A. 38-B.
Citronella oil, naturalS.D.A. 38-B.
Clove oil, N.FS.D.A. 38-B.
Coal tar, U.S.PS.D.A. 38-B.
Cornmint oilS.D.A. 38-B.
CyclohexaneS.D.A. 3-A.
Denatonium benzoate, N.F.S.D.A. 1, 40-B.
Diethyl phthalateS.D.A. 39-B, 39-C.
Distilled lime oilS.D.A. 38-B.
Ethyl acetateC.D.A. 35; S.D.A. 29, 35-A.
Ethyl etherS.D.A. 13-A, 19, 32.
Ethyl tertiary butyl etherC.D.A. 20.
Eucalyptol, N.F.XIIS.D.A. 37, 38-B.
Eucalyptus oil, N.FS.D.A. 38-B.
Eugenol, U.S.PS.D.A. 38-B.
Formaldehyde solution, U.S.PS.D.A. 38-D.
GasolineC.D.A. 18, 19; S.D.A. 28-A.
Gasoline, unleadedC.D.A. 18, 19, 20; S.D.A 28-A.
Glycerin (Glycerol), U.S.PS.D.A. 31-A.
Green soap, U.S.PS.D.A.
Guaiacol, N.F.XS.D.A. 38-B.
HeptaneC.D.A. 18, 19; S.D.A. 2-B, 28-A.
HexaneS.D.A. 2-B.
-HexaneS.D.A. 2-B.
High octane denaturant blendC.D.A. 20.
Hydrochloric acid, N.FS.D.A. 38-F.
Iodine, U.S.PS.D.A. 25, 25-A.
Isopropyl alcoholS.D.A. 3-C.
KeroseneC.D.A. 18, 19, 20.
Kerosene (deodorized)C.D.A. 18, 19, 20.
L(-)-CarvoneS.D.A. 38-B.
Lavender oil, N.FS.D.A. 38-B.
Lemon oilS.D.A. 38-B.
Menthol, U.S.PS.D.A. 37, 38-B, 38-D, 38-F.
Methyl alcoholS.D.A. 1, 3-A, 30.
Methylene blue, U.S.PS.D.A. 4; S.D.R. 4.
Methyl isobutyl ketoneC.D.A. 18, 19; S.D.A. 1, 23-H.
Methyl -butyl ketoneC.D.A. 18, 19; S.D.A. 1.
Methyl salicylate, N.FS.D.A. 38-B
Methyl tertiary butyl etherC.D.A. 20.
Mustard oil, volatile (allyl isothiocyanate), U.S.P.XIIS.D.A. 38-B.
NaphthaC.D.A. 20.
Natural gasolineC.D.A. 20.
Nicotine solutionS.D.A. 4; S.D.R. 4.
Nitropropane, mixed isomers ofC.D.A. 18, 19; S.D.A. 1.
Peppermint oil, N.FS.D.A. 38-B.
Peppermint oil, terpenelessS.D.A. 38-B.
Phenol, U.S.PS.D.A. 38-B.
Phenyl salicylate (salol), N.F.XIS.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.FS.D.A. 38-F.
Potassium hydroxideS.D.A. 36.
Potassium iodide, U.S.PS.D.A. 25, 25-A.
PyronateC.D.A. 18.
QuassinS.D.A. 40.
Quinine bisulfate, N.F.XIS.D.A. 39-D.
Quinine sulfate, U.S.PS.D.A. 39-D.
RaffinateC.D.A. 20.
Rosemary oil, N.F. XIIS.D.A. 38-B.
Rubber hydrocarbon solventC.D.A. 18, 19, 20; S.D.A. 2-B, 28-A.
SafroleS.D.A. 38-B.
Sassafras oil, N.F.XIS.D.A. 38-B.
Shellac (refined)S.D.A. 45.
Soap, hard, N.F.XIS.D.A. 31-A.
Sodium iodide, U.S.PS.D.A. 25, 25-A.
Sodium salicylate, U.S.PS.D.A. 39-D.
Spearmint oil, N.FS.D.A. 38-B.
Spearmint oil, terpenelessS.D.A. 38-B.
Spike lavender oil, naturalS.D.A. 38-B.
Storax, U.S.PS.D.A. 38-B.
Straight run gasolineC.D.A. 20.
Sucrose octaacetateS.D.A. 40-A.
Thyme oil, N.F.XIIS.D.A. 38-B.
Thymol, N.FS.D.A. 37, 38-B, 38-F.
Tolu balsam, U.S.PS.D.A. 38-B.
TolueneC.D.A. 12-A; S.D.A. 2-B.
Turpentine oil, N.F.XIS.D.A. 38-B.
VinegarS.D.A. 18.
Zinc chloride, U.S.PS.D.A. 38-F.

[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]