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HTS heading 2921: Amine-function compounds

Heading 2921 of the US Harmonized Tariff Schedule covers Amine-function compounds. Below: every rated tariff line in it with its general duty rate, Section 301 China status and exclusions, then a page per line with a free duty calculator.

Official USITC HTS, 2026HTSRev22 · check on hts.usitc.gov

Heading 2921 at a glance

Goods named in this heading (official line texts): Methylamine, di- or trimethylamine and their salts, 2-(N,N-Dimethylamino)ethyl chloride hydrochloride, 2-(N,N-Diethylamino)ethyl chloride hydrochloride, 2-(N,N,-Diisopropylamino)ethyl chloride hydrochloride, Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any…, 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride, Ethylenediamine and.

Subheadings (6-digit)

All tariff lines in heading 2921

LineDescriptionGeneralSection 301 (China)Exclusions
2921.11.00Methylamine, di- or trimethylamine and their salts3.7%List 3 +25%
2921.12.012-(N,N-Dimethylamino)ethyl chloride hydrochlorideFreeList 4A +7.5%
2921.13.002-(N,N-Diethylamino)ethyl chloride hydrochlorideFreeList 3 +25%
2921.14.002-(N,N,-Diisopropylamino)ethyl chloride hydrochloride6.5%List 3 +25%
2921.19.11Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any…3.7%List 3 +25%
2921.19.313-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochlorideFreeList 3 +25%
2921.19.61Other: Other6.5%List 3 +25%
2921.21.00Ethylenediamine and its salts5.8%List 3 +25%
2921.22.05Hexamethylenediamine adipate (Nylon salt)6.5%List 3 +25%
2921.22.10Derived in whole or in part from adipic acid6.5%List 3 +25%
2921.22.50Other: Other6.5%List 3 +25%
2921.29.00Acyclic polyamines and their derivatives; salts thereof: Other6.5%List 3 +25%
2921.30.051,3-Bis(aminoethyl)cyclohexaneFreeList 3 +25%
2921.30.10Products described in additional U.S. note 3 to section VI6.5%List 3 +25%
2921.30.30Other: Other6.5%List 3 +25%
2921.30.50Cyclanic, cyclenic or cycloterpenic mono- or polyamines, and their derivatives; …: Other3.7%List 3 +25%
2921.41.10Aniline and its salts: Aniline6.5%List 3 +25%
2921.41.20Aniline and its salts: Aniline salts6.5%List 3 +25%
2921.42.10Aniline derivatives and their salts: N,N-Dimethylaniline6.5%List 4A +7.5%
2921.42.15N-Ethylaniline; andN,N-Diethylaniline6.5%List 3 +25%
2921.42.16Aniline derivatives and their salts: 2,4,5-TrichloroanilineFreeList 3 +25%
2921.42.18o-Aminobenzenesulfonic acid (Orthanilic acid); 6-Chlorometanilic acid; 2-Chloro-5-nitroaniline…5.8%List 4A +7.5%
2921.42.21Aniline derivatives and their salts: Metanilic acid6.5%List 3 +25%
2921.42.22Aniline derivatives and their salts: Sulfanilic acid6.5%List 3 +25%
2921.42.23Aniline derivatives and their salts: 3,4-Dichloroaniline6.5%List 3 +25%
2921.42.36m-Chloroaniline; 2-Chloro-4-nitroaniline; 2,5-Dichloroaniline-4-sulfonic acid and its monosodi…FreeList 3 +25%
2921.42.55Other: Fast color bases6.5%List 4B (suspended, no extra duty)
2921.42.65Products described in additional U.S. note 3 to section VI6.5%List 4A +7.5%
2921.42.90Other: Other6.5%List 3 +25%
2921.43.043-Chloro-o-toluidine; and 6-Chloro-o-toluidineFreeList 3 +25%
2921.43.084-Chloro-o-toluidine and hydrochloride; 5-Chloro-o-toluidine; 6-Chloro-2-toluidine-4-sulfonic …5.8%List 3 +25%
2921.43.15α,α,α-Trifluoro-2,6-dinitro-N,N-dipropyl-p- toluidine (Trifluralin)6.5%List 3 +25%
2921.43.19α,α,α-Trifluoro-o-toluidine; andα,α,α-Trifluoro-6-chloro-m-toluidine6.5%List 3 +25%
2921.43.22N-Ethyl-N-(2-methyl-2-propenyl)-2,6- dinitro-4-(trifluoromethyl)benzenamine6.5%List 3 +25%
2921.43.242-Amino-5-chloro-4-ethyl benzenesulfonic acid; 2-Amino-5-chloro-p-toluenesulfonic acid;p-Nitro…FreeList 3 +25%
2921.43.40Products described in additional U.S. note 3 to section VI6.5%List 3 +25%
2921.43.90Other: Other6.5%List 3 +25%
2921.44.054,4'-Bis (α,α-dimethylbenzyl) diphenylamine; andN-NitrosodiphenylamineFreeList 3 +25%
2921.44.10Diphenylamine and its derivatives; salts thereof: Nitrodiphenylamine6.5%List 3 +25%
2921.44.20Products described in additional U.S. note 3 to section VI6.5%List 3 +25%
2921.44.70Other: Other6.5%List 3 +25%
2921.45.107-Amino-1,3-naphthalenedisulfonic acid and its salts; 5-Amino-2-naphthalenesulfonic acid and i…6.5%List 3 +25%
2921.45.203-Amino-2,7-naphthalenedisulfonic acid; 4-Amino-1-naphthalenesulfonic acid, sodium salt; 5-Ami…5.8%List 3 +25%
2921.45.25Mixtures of 5- and 8-amino-2-naphthalene- sulfonic acid; 2-Naphthylamine-6-sulfonic acid; ando…FreeList 3 +25%
2921.45.60Products described in additional U.S. note 3 to section VI6.5%List 4A +7.5%
2921.45.90Other: Other6.5%List 3 +25%
2921.46.00Amfetamine (INN), benzfetamine (INN), dexamfetamine (INN), etilamfetamine (INN), fencamfamin (…Freenone
2921.49.104-Amino-2-stilbenesulfonic acid and its salts;p-Ethylaniline; 2,4,6-Trimethylaniline (Mesidine…5.8%List 3 +25%
2921.49.15Other: m-Nitro-p-toluidineFreeList 4A +7.5%
2921.49.32Other: Fast color bases6.5%none
2921.49.38Antidepressants, tranquilizers and other psychotherapeutic agents6.5%none
2921.49.43Drugs: Other6.5%none
2921.49.45Products described in additional U.S. note 3 to section VI6.5%List 3 +25%
2921.49.50Other: Other6.5%List 3 +25%
2921.51.104-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Tolu…6.5%List 3 +25%
2921.51.20Other: Photographic chemicals6.5%List 4A +7.5%
2921.51.30Products described in additional U.S. note 3 to section VI6.5%List 3 +25%
2921.51.50Other: Other6.5%List 3 +25%
2921.59.041,8-Diaminonaphthalene (1,8-Naphthalenediamine)FreeList 3 +25%
2921.59.085-Amino-2-(p-aminoanilino) benzenesulfonic acid; 4,4'-Diamino-3-biphenylsulfonic acid (3-Benzi…5.8%List 3 +25%
2921.59.174,4'-Benzidine-2,2'-disulfonic acid; 1,4-Diaminobenzene-2-sulfonic acid; 4,4'-Methylene bis ((…FreeList 3 +25%
2921.59.204,4'-Diamino-2,2'-stilbenedisulfonic acid6.5%List 3 +25%
2921.59.30Other: 4,4'-Methylenedianiline6.5%List 3 +25%
2921.59.40Products described in additional U.S. note 3 to section VI6.5%List 3 +25%
2921.59.80Other: Other6.5%List 3 +25%

All of chapter 29 · Chapter 29 rate summary · HTS lookup

General information from the official US Harmonized Tariff Schedule (USITC) and USTR Section 301 notices in HTS Chapter 99; not legal or customs advice. Classification is decided by CBP; confirm with a licensed customs broker or a CBP binding ruling.

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