Schedule in force 2026-08-31HTS 2026HTSRev17HTS 2921 · Chapter 29
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HTS 2921

Heading 2921 covers amine-function compounds. Duty is assessed at the 10-digit statistical line; the figures here are resolved for 2921.11.00.00, the first line under this heading. Its Column 1 rate is 3.7%; other lines under 2921 carry different Column 1 rates. On top of that, the ad valorem total depends on origin: China carries 41.20% and Italy carries 10.00%.

Chapter 29 · Verified 2026-08-31
HTS 2026HTSRev17

76 statistical lines under this heading · 4 distinct Column 1 rates · highest ad valorem total 41.20% from China · lowest 10.00% from Italy

OriginAd valorem layersLayersReported under
China CHN41.20%mfn + s301 + s3019903.88.03 9903.05.31
Vietnam VNM16.20%mfn + s3019903.05.84
Thailand THA16.20%mfn + s3019903.05.77
Brazil BRA16.20%mfn + s3019903.05.27
Mexico MEX13.70%mfn + s3019903.05.55
Canada CAN13.70%mfn + s3019903.05.29
India IND13.70%mfn + s3019903.05.44
United Kingdom GBR13.70%mfn + s3019903.05.81
Japan JPN12.50%s3019903.05.49
South Korea KOR12.50%s3019903.05.71
Germany DEU10.00%s3019903.05.39
Italy ITA10.00%s3019903.05.39
Table 1Rate by country of origin for 2921.11.00.00, resolved 2026-08-31. The first statistical line under 2921; other lines may carry different Column 1 rates.
CodeDescriptionColumn 1SpecialUnits
2921.11.00.00Methylamine, di- or trimethylamine and their salts3.7%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.12.01.002-(N,N-Dimethylamino)ethyl chloride hydrochlorideFree—kg
2921.13.00.002-(N,N-Diethylamino)ethyl chloride hydrochlorideFree—kg
2921.14.00.002-(N,N,-Diisopropylamino)ethyl chloride hydrochloride6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2921.19.11.00Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing3.7%Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2921.19.31.003-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochlorideFree—kg
2921.19.61.10N,N-Dialkyl (methyl, ethyl or n-propyl)-2-chloroethylamines and their protonated saltsinherited—kg
2921.19.61.20Bis(2-chloroethyl)ethylamine)inherited—kg
2921.19.61.30Chlormethine (INN) (bis(2-chloroethyl)methylamine)inherited—kg
2921.19.61.40Trichlormethine (INN) (tris(2-chloroethyl)amine)inherited—kg
2921.19.61.95Otherinherited—kg
2921.21.00.00Ethylenediamine and its salts5.8%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.22.05.00Hexamethylenediamine adipate (Nylon salt)6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.22.10.00Derived in whole or in part from adipic acid6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.22.50.00Other6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.29.00.10Tetraethylene pentamineinherited—kg
2921.29.00.20Triethylenetetramineinherited—kg
2921.29.00.30Diethylenetriamineinherited—kg
2921.29.00.55Otherinherited—kg
2921.30.05.001,3-Bis(aminoethyl)cyclohexaneFree—kg
2921.30.10.00Products described in additional U.S. note 3 to section VI6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)kg
2921.30.30.00Other6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)kg
2921.30.50.00Other3.7%Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2921.41.10.00Aniline6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.41.20.00Aniline salts6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.42.10.00N,N-Dimethylaniline6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.42.15.00N-Ethylaniline; andN,N-Diethylaniline6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.42.16.002,4,5-TrichloroanilineFree—kg
2921.42.18.00o-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-Nitroaniline5.8%Free(A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE, S,SG)kg
2921.42.21.00Metanilic acid6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)kg
2921.42.22.00Sulfanilic acid6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.42.23.003,4-Dichloroaniline6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.42.36.00m-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-TrifluoroanilineFree—kg
2921.42.55.00Fast color bases6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.42.65.00Products described in additional U.S. note 3 to section VI6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)kg
2921.42.90.00Other6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)kg
2921.43.04.003-Chloro-o-toluidine; and 6-Chloro-o-toluidineFree—kg
2921.43.08.004-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-toluidine5.8%Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)kg
2921.43.15.00α,α,α-Trifluoro-2,6-dinitro-N,N-dipropyl-p- toluidine (Trifluralin)6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.43.19.00α,α,α-Trifluoro-o-toluidine; andα,α,α-Trifluoro-6-chloro-m-toluidine6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)kg
2921.43.22.00N-Ethyl-N-(2-methyl-2-propenyl)-2,6- dinitro-4-(trifluoromethyl)benzenamine6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2921.43.24.002-Amino-5-chloro-4-ethyl benzenesulfonic acid; 2-Amino-5-chloro-p-toluenesulfonic acid;p-Nitro-o-toluidine; and 3-(Trifluoromethyl) aniline (m-Aminobenzotrifluoride)Free—kg
2921.43.40.00Products described in additional U.S. note 3 to section VI6.5%Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2921.43.90.202-Chloro-p-toluidine-5-sulfonic acid (CAS No. 88-51-7)inherited—kg
2921.43.90.40p-Toluidine-m-sulfonic acid (CAS No. 88-44-8)inherited—kg
2921.43.90.90Otherinherited—kg
2921.44.05.004,4'-Bis (α,α-dimethylbenzyl) diphenylamine; andN-NitrosodiphenylamineFree—kg
2921.44.10.00Nitrodiphenylamine6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.44.20.00Products described in additional U.S. note 3 to section VI6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.44.70.00Other6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.45.10.007-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-naphthylamine6.5%Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)kg
2921.45.20.003-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-naphthylamine5.8%Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)kg
2921.45.25.00Mixtures of 5- and 8-amino-2-naphthalene- sulfonic acid; 2-Naphthylamine-6-sulfonic acid; ando-Naphthionic acid (1-amino- 2-naphthalene- sulfonic acid)Free—kg
2921.45.60.00Products described in additional U.S. note 3 to section VI6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)kg
2921.45.90.102-Amino-1-naphthalenesulfonic acid (Tobias acid)inherited—kg
2921.45.90.90Otherinherited—kg
2921.46.00.00Amfetamine (INN), benzfetamine (INN), dexamfetamine (INN), etilamfetamine (INN), fencamfamin (INN), lefetamine (INN), levamfetamine (INN), mefenorex (INN) and phentermine (INN); salts thereofFree—kg
2921.49.10.004-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-Xylidine5.8%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2921.49.15.00m-Nitro-p-toluidineFree—kg
2921.49.32.00Fast color bases6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
Table 2Statistical suffixes under 2921. Duty is assessed at the 10-digit level; the Column 1 rate is stated at the subheading and inherited below it.
ProgrammeRate as publishedContributionReported underIn force from
Column 1 General (MFN)3.7%3.70%—not established

Source: USITC, Harmonized Tariff Schedule of the United States, 2026 HTS Revision 17, published 2026-08-01. Verified 2026-08-31.

Section 301The duty provided in the applicable subheading + 25%25.00%9903.88.032018-09-24
Status unconfirmed. The second statutory four-year review of this action is running. The continuation-request deadlines for the underlying 2018 actions closed on 2026-07-05 and 2026-08-22 and no continuation notice has been published. There is no evidence of termination either, and the duty is almost certainly still collectible; what we cannot do is cite a document saying so.

Source: USTR, Notice of Modification of Section 301 Action: China's Acts, Policies and Practices Related to Technology Transfer (List 3) (83 FR 47974), published 2018-09-21. Verified 2026-08-31.

Section 301The duty provided in the applicable subheading + 12.5%12.50%9903.05.312026-07-24

Source: USTR, Notice of Actions in Section 301 Investigations of Various Economies (FR Doc. 2026-15181), published 2026-07-28. Verified 2026-08-31.

Table 3Duty stack for 2921.11.00.00 from China, resolved 2026-08-31.

Common questions

What is the duty rate for HTS 2921?
Heading 2921 covers amine-function compounds. Duty is assessed at the 10-digit statistical line; the figures here are resolved for 2921.11.00.00, the first line under this heading. Its Column 1 rate is 3.7%; other lines under 2921 carry different Column 1 rates. On top of that, the ad valorem total depends on origin: China carries 41.20% and Italy carries 10.00%.
Why does the rate differ by country for the same HTS code?
The Column 1 rate is the same for every origin with normal trade relations. Trade-remedy duties under Sections 232, 301 and 338 are imposed by origin, by product, or by both, so two shipments of the same article from different countries can carry very different totals.
Is this the rate I will actually pay?
It is the rate that applies to this classification and origin on the date shown. The duty owed on a specific entry also depends on the 10-digit statistical suffix, declared content where a duty is content-based, preference eligibility, and any AD/CVD order in scope.