HTS Heading 2921

Amine-function compounds

All 76 HTS codes under heading 2921 (amine-function compounds), with their duty rates from the 2026 HTS Revision 23. General duty Free to 6.5%.

Every line of heading 2921

  • 2921 Amine-function compounds.
  • 2921.11.00.00 Methylamine, di- or trimethylamine and their salts (kg): General 3.7%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
  • 2921.12.01.00 2-(N,N-Dimethylamino)ethyl chloride hydrochloride (kg): General Free; Special none; Column 2 30.5%.
  • 2921.13.00.00 2-(N,N-Diethylamino)ethyl chloride hydrochloride (kg): General Free; Special none; Column 2 30.5%.
  • 2921.14.00.00 2-(N,N,-Diisopropylamino)ethyl chloride hydrochloride (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 30.5%.
  • 2921.19 Other (under: Acyclic monoamines and their derivatives; salts thereof).
  • 2921.19.11.00 Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing (kg): General 3.7%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
  • 2921.19.31.00 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride (kg): General Free; Special none; Column 2 30.5%.
  • 2921.19.61 Other (under: Other): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 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 (under: Other) (kg).
  • 2921.21.00.00 Ethylenediamine and its salts (kg): General 5.8%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 39%.
  • 2921.22 Hexamethylenediamine and its salts.
  • 2921.22.05.00 Hexamethylenediamine adipate (Nylon salt) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 46%.
  • 2921.22.10.00 Derived in whole or in part from adipic acid (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 66.5%.
  • 2921.22.50.00 Other (under: Other) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 30.5%.
  • 2921.29.00 Other (under: Acyclic polyamines and their derivatives; salts thereof): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 30.5%.
  • 2921.29.00.10 Tetraethylene pentamine (under: Other) (kg).
  • 2921.29.00.20 Triethylenetetramine (under: Other) (kg).
  • 2921.29.00.30 Diethylenetriamine (under: Other) (kg).
  • 2921.29.00.55 Other (under: Other) (kg).
  • 2921.30 Cyclanic, cyclenic or cycloterpenic mono- or polyamines, and their derivatives; salts thereof.
  • 2921.30.05.00 1,3-Bis(aminoethyl)cyclohexane (kg): General Free; Special none; Column 2 15.4¢/kg + 53.5%.
  • 2921.30.10.00 Products described in additional U.S. note 3 to section VI (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 53.5%.
  • 2921.30.30.00 Other (under: Other) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 53.5%.
  • 2921.30.50.00 Other (under: Cyclanic, cyclenic or cycloterpenic mono- or polyamines, and their derivatives; salts thereof) (kg): General 3.7%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
  • 2921.41 Aniline and its salts (under: Aromatic monoamines and their derivatives; salts thereof).
  • 2921.41.10.00 Aniline (under: Aniline and its salts) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 43.5%.
  • 2921.41.20.00 Aniline salts (under: Aniline and its salts) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.42 Aniline derivatives and their salts.
  • 2921.42.10.00 N,N-Dimethylaniline (under: Aniline derivatives and their salts) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 40%.
  • 2921.42.15.00 N-Ethylaniline; andN,N-Diethylaniline (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.42.16.00 2,4,5-Trichloroaniline (under: Aniline derivatives and their salts) (kg): General Free; Special none; Column 2 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): General 5.8%; Special Free(A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE, S,SG); Column 2 15.4¢/kg + 39.5%.
  • 2921.42.21.00 Metanilic acid (under: Aniline derivatives and their salts) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.42.22.00 Sulfanilic acid (under: Aniline derivatives and their salts) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.42.23.00 3,4-Dichloroaniline (under: Aniline derivatives and their salts) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 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): General Free; Special none; Column 2 15.4¢/kg + 60%.
  • 2921.42.55.00 Fast color bases (under: Other) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 53%.
  • 2921.42.65.00 Products described in additional U.S. note 3 to section VI (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.42.90.00 Other (under: Other) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG); Column 2 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): General Free; Special none; Column 2 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): General 5.8%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 39.5%.
  • 2921.43.15.00 α,α,α-Trifluoro-2,6-dinitro-N,N-dipropyl-p- toluidine (Trifluralin) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 48.5%.
  • 2921.43.19.00 α,α,α-Trifluoro-o-toluidine; andα,α,α-Trifluoro-6-chloro-m-toluidine (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.43.22.00 N-Ethyl-N-(2-methyl-2-propenyl)-2,6- dinitro-4-(trifluoromethyl)benzenamine (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 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): General Free; Special none; Column 2 15.4¢/kg + 60%.
  • 2921.43.40.00 Products described in additional U.S. note 3 to section VI (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.43.90 Other (under: Other): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 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 (under: Other) (kg).
  • 2921.44 Diphenylamine and its derivatives; salts thereof.
  • 2921.44.05.00 4,4'-Bis (α,α-dimethylbenzyl) diphenylamine; andN-Nitrosodiphenylamine (kg): General Free; Special none; Column 2 15.4¢/kg + 60%.
  • 2921.44.10.00 Nitrodiphenylamine (under: Diphenylamine and its derivatives; salts thereof) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 40%.
  • 2921.44.20.00 Products described in additional U.S. note 3 to section VI (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.44.70.00 Other (under: Other) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 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): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 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): General 5.8%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 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): General Free; Special none; Column 2 15.4¢/kg + 60%.
  • 2921.45.60.00 Products described in additional U.S. note 3 to section VI (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.45.90 Other (under: Other): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.45.90.10 2-Amino-1-naphthalenesulfonic acid (Tobias acid) (kg).
  • 2921.45.90.90 Other (under: 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): General Free; Special none; Column 2 15.4¢/kg + 149.5%.
  • 2921.49 Other (under: Aromatic monoamines and their derivatives; salts thereof).
  • 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): General 5.8%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 48.5%.
  • 2921.49.15.00 m-Nitro-p-toluidine (under: Other) (kg): General Free; Special none; Column 2 15.4¢/kg + 53%.
  • 2921.49.32.00 Fast color bases (under: Other) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 53%.
  • 2921.49.38.00 Antidepressants, tranquilizers and other psychotherapeutic agents (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 149.5%.
  • 2921.49.43.00 Other (under: Drugs) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 71.5%.
  • 2921.49.45.00 Products described in additional U.S. note 3 to section VI (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.49.50.00 Other (under: Other) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 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): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 48.5%.
  • 2921.51.20.00 Photographic chemicals (under: Other) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 50%.
  • 2921.51.30.00 Products described in additional U.S. note 3 to section VI (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.51.50.00 Other (under: Other) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.59 Other (under: Aromatic polyamines and their derivatives; salts thereof).
  • 2921.59.04.00 1,8-Diaminonaphthalene (1,8-Naphthalenediamine) (kg): General Free; Special none; Column 2 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): General 5.8%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG); Column 2 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): General Free; Special none; Column 2 15.4¢/kg + 60%.
  • 2921.59.20.00 4,4'-Diamino-2,2'-stilbenedisulfonic acid (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 15.4¢/kg + 80%.
  • 2921.59.30.00 4,4'-Methylenedianiline (under: Other) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 40%.
  • 2921.59.40.00 Products described in additional U.S. note 3 to section VI (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.59.80 Other (under: Other): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG); Column 2 15.4¢/kg + 60%.
  • 2921.59.80.10 3,3'-Dichlorobenzidine dihydrochloride (kg).
  • 2921.59.80.90 Other (under: Other) (kg).

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.

Last reviewed 2026-11-12.