Heading 2921: Amine-function compounds

In chapter 29, Organic chemicals. 65 rate lines, laid out as HTS Revision 20 (2026) prints them.

HTS number	Description	Units	General	Special	Column 2
2921	Amine-function compounds
	Acyclic monoamines and their derivatives; salts thereof:
2921.11.00.00	Methylamine, di- or trimethylamine and their salts	kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2921.12.01.00	2-(N,N-Dimethylamino)ethyl chloride hydrochloride	kg	Free		30.5%
2921.13.00.00	2-(N,N-Diethylamino)ethyl chloride hydrochloride	kg	Free		30.5%
2921.14.00.00	2-(N,N,-Diisopropylamino)ethyl chloride hydrochloride	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	30.5%
2921.19	Other:
2921.19.11.00	Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing	kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
2921.19.31.00	3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride	kg	Free		30.5%
2921.19.61	Other		6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	30.5%
2921.19.61.10	N,N-Dialkyl (methyl, ethyl or n-propyl)-2-chloroethylamines and their protonated salts	kg
2921.19.61.20	Bis(2-chloroethyl)ethylamine)	kg
2921.19.61.30	Chlormethine (INN) (bis(2-chloroethyl)methylamine)	kg
2921.19.61.40	Trichlormethine (INN) (tris(2-chloroethyl)amine)	kg
2921.19.61.95	Other	kg
	Acyclic polyamines and their derivatives; salts thereof:
2921.21.00.00	Ethylenediamine and its salts	kg	5.8%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	39%
2921.22	Hexamethylenediamine and its salts:
2921.22.05.00	Hexamethylenediamine adipate (Nylon salt)	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 46%
	Other:
2921.22.10.00	Derived in whole or in part from adipic acid	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 66.5%
2921.22.50.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	30.5%
2921.29.00	Other		6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	30.5%
2921.29.00.10	Tetraethylene pentamine	kg
2921.29.00.20	Triethylenetetramine	kg
2921.29.00.30	Diethylenetriamine	kg
2921.29.00.55	Other	kg
2921.30	Cyclanic, cyclenic or cycloterpenic mono- or polyamines, and their derivatives; salts thereof:
	Derived in whole or in part from any aromatic compound:
2921.30.05.00	1,3-Bis(aminoethyl)cyclohexane	kg	Free		15.4¢/kg + 53.5%
	Other:
2921.30.10.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 53.5%
2921.30.30.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 53.5%
2921.30.50.00	Other	kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
	Aromatic monoamines and their derivatives; salts thereof:
2921.41	Aniline and its salts:
2921.41.10.00	Aniline	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 43.5%
2921.41.20.00	Aniline salts	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.42	Aniline derivatives and their salts:
2921.42.10.00	N,N-Dimethylaniline	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 40%
2921.42.15.00	N-Ethylaniline; andN,N-Diethylaniline	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.42.16.00	2,4,5-Trichloroaniline	kg	Free		15.4¢/kg + 39.5%
2921.42.18.00	o-Aminobenzenesulfonic acid (Orthanilic acid); 6-Chlorometanilic acid; 2-Chloro-5-nitroaniline; 4-Chloro-3-nitroaniline; 2,3-Dichloroaniline; 2,4-Dichloroaniline; 2,5-Dichloroaniline; 3,5-Dichloroaniline;N,N-Diethylmetanilic acid;N,N-Diethylmetanilic acid, sodium salt; 2,4-Difluoroaniline;p-Fluoroaniline;N-Methylaniline; andm-Nitroaniline	kg	5.8%	Free(A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE, S,SG)	15.4¢/kg + 39.5%
2921.42.21.00	Metanilic acid	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.42.22.00	Sulfanilic acid	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.42.23.00	3,4-Dichloroaniline	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.42.36.00	m-Chloroaniline; 2-Chloro-4-nitroaniline; 2,5-Dichloroaniline-4-sulfonic acid and its monosodium salt; 2,4-Dinitroaniline;o-Nitroaniline-p-sulfonic acid, sodium salt; and 2,3,4-Trifluoroaniline	kg	Free		15.4¢/kg + 60%
	Other:
2921.42.55.00	Fast color bases	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 53%
	Other:
2921.42.65.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.42.90.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.43	Toluidines and their derivatives; salts thereof:
2921.43.04.00	3-Chloro-o-toluidine; and 6-Chloro-o-toluidine	kg	Free		15.4¢/kg + 39.5%
2921.43.08.00	4-Chloro-o-toluidine and hydrochloride; 5-Chloro-o-toluidine; 6-Chloro-2-toluidine-4-sulfonic acid; 4-Chloro-α,α,α-trifluoro-o- toluidine; 2,6-Dichloro-m-toluidine;N,N- Dimethyl-p-toluidine;N-Ethyl-N-benzyl-m-toluidine; andN-Ethyl-o-toluidine	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 39.5%
2921.43.15.00	α,α,α-Trifluoro-2,6-dinitro-N,N-dipropyl-p- toluidine (Trifluralin)	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2921.43.19.00	α,α,α-Trifluoro-o-toluidine; andα,α,α-Trifluoro-6-chloro-m-toluidine	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.43.22.00	N-Ethyl-N-(2-methyl-2-propenyl)-2,6- dinitro-4-(trifluoromethyl)benzenamine	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.43.24.00	2-Amino-5-chloro-4-ethyl benzenesulfonic acid; 2-Amino-5-chloro-p-toluenesulfonic acid;p-Nitro-o-toluidine; and 3-(Trifluoromethyl) aniline (m-Aminobenzotrifluoride)	kg	Free		15.4¢/kg + 60%
	Other:
2921.43.40.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.43.90	Other		6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.43.90.20	2-Chloro-p-toluidine-5-sulfonic acid (CAS No. 88-51-7)	kg
2921.43.90.40	p-Toluidine-m-sulfonic acid (CAS No. 88-44-8)	kg
2921.43.90.90	Other	kg
2921.44	Diphenylamine and its derivatives; salts thereof:
2921.44.05.00	4,4'-Bis (α,α-dimethylbenzyl) diphenylamine; andN-Nitrosodiphenylamine	kg	Free		15.4¢/kg + 60%
2921.44.10.00	Nitrodiphenylamine	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 40%
	Other:
2921.44.20.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.44.70.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.45	1-Naphthylamine (α-Naphthylamine), 2-Naphthylamine (β-Naphthylamine), and their derivatives; salts thereof:
2921.45.10.00	7-Amino-1,3-naphthalenedisulfonic acid and its salts; 5-Amino-2-naphthalenesulfonic acid and its salts; 8-Amino-1-naphthalenesulfonic acid and its salts; andN-Phenyl-2-naphthylamine	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2921.45.20.00	3-Amino-2,7-naphthalenedisulfonic acid; 4-Amino-1-naphthalenesulfonic acid, sodium salt; 5-Amino-1-naphthalenesulfonic acid (Laurent's acid); 8-Amino-2-naphthalenesulfonic acid and its salts; 7-Amino-1,3,6-naphthalenetrisulfonic acid; 8-Anilino-1-naphthalenesulfonic acid (Phenyl Peri acid) and its salts; andN-Ethyl-1-naphthylamine	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 39.5%
2921.45.25.00	Mixtures of 5- and 8-amino-2-naphthalene- sulfonic acid; 2-Naphthylamine-6-sulfonic acid; ando-Naphthionic acid (1-amino- 2-naphthalene- sulfonic acid)	kg	Free		15.4¢/kg + 60%
	Other:
2921.45.60.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.45.90	Other		6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.45.90.10	2-Amino-1-naphthalenesulfonic acid (Tobias acid)	kg
2921.45.90.90	Other	kg
2921.46.00.00	Amfetamine (INN), benzfetamine (INN), dexamfetamine (INN), etilamfetamine (INN), fencamfamin (INN), lefetamine (INN), levamfetamine (INN), mefenorex (INN) and phentermine (INN); salts thereof	kg	Free		15.4¢/kg + 149.5%
2921.49	Other:
2921.49.10.00	4-Amino-2-stilbenesulfonic acid and its salts;p-Ethylaniline; 2,4,6-Trimethylaniline (Mesidine); 2,3-Xylidine; 2,4-Xylidine; 2,5-Xylidine; and 3,4-Xylidine	kg	5.8%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 48.5%
2921.49.15.00	m-Nitro-p-toluidine	kg	Free		15.4¢/kg + 53%
	Other:
2921.49.32.00	Fast color bases	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 53%
	Drugs:
2921.49.38.00	Antidepressants, tranquilizers and other psychotherapeutic agents	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 149.5%
2921.49.43.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 71.5%
	Other:
2921.49.45.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.49.50.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
	Aromatic polyamines and their derivatives; salts thereof:
2921.51	o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof:
2921.51.10.00	4-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Toluene-2,4-diamine; Toluene-2,5-diamine; and Toluene-2,5-diamine sulfate	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
	Other:
2921.51.20.00	Photographic chemicals	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 50%
	Other:
2921.51.30.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.51.50.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 60%
2921.59	Other:
2921.59.04.00	1,8-Diaminonaphthalene (1,8-Naphthalenediamine)	kg	Free		15.4¢/kg + 39.5%
2921.59.08.00	5-Amino-2-(p-aminoanilino) benzenesulfonic acid; 4,4'-Diamino-3-biphenylsulfonic acid (3-Benzidinesulfonic acid); 3,3'-Dimethylbenzidine (o-Tolidine); 3,3'-Dimethylbenzidine hydrochloride; Ethyl-(2-dimethylaminoethyl) aniline;N-Ethyl-N,N'-dimethyl-N'-phenylethylene- diamine; and 4,4'-Methylenebis(2-chloroaniline)	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 39.5%
2921.59.17.00	4,4'-Benzidine-2,2'-disulfonic acid; 1,4-Diaminobenzene-2-sulfonic acid; 4,4'-Methylene bis ((3-chloro-2,6-diethylaniline); 4,4'-Methylene bis(2,6-diethylaniline); 4,4'-Methylene bis (2,6-diisopropylaniline);m-Xylene diamine; and 3,3'-Diaminobenzidine (tetraaminobiphenyl)	kg	Free		15.4¢/kg + 60%
2921.59.20.00	4,4'-Diamino-2,2'-stilbenedisulfonic acid	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 80%
2921.59.30.00	4,4'-Methylenedianiline	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 40%
	Other:
2921.59.40.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.59.80	Other		6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 60%
2921.59.80.10	3,3'-Dichlorobenzidine dihydrochloride	kg
2921.59.80.90	Other	kg

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9903.90.08 cited by 2 lines

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Built September 29, 2026 from HTS Revision 20 (2026) (USITC release 2026HTSRev20, published September 23, 2026, current since September 28, 2026). The schedule changes often; USITC's own site always has the current text.