Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing
Amine-function compounds > Acyclic monoamines and their derivatives; salts thereof: > Other: > Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing
Duty Rate (from China)
Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
What changed
Since July 2, 2026, for imports from China
- •Section 232 Pharma — Patented (9903.04.60) now applies: +96.3%
- •Section 301 Forced Labor — China (9903.05.31) now applies: +12.5%
Products classified under HTS 2921.19.11.00
Diethylamine
Diethylamine is an acyclic monoamine with the formula (C2H5)2NH, classified under HTS 2921.19.11.00 as a di-ethylamine. It is a chemically defined organic compound used primarily in chemical synthesis and as a corrosion inhibitor.
Triethylamine
Triethylamine ((C2H5)3N) is a tri-ethylamine, a tertiary acyclic monoamine under HTS 2921.19.11.00. It serves as a base catalyst in organic reactions and polymerization processes.
Dipropylamine
Dipropylamine ((C3H7)2NH) is a secondary acyclic di-propylamine covered by HTS 2921.19.11.00. It functions as an intermediate in rubber accelerator manufacturing.
Diethylamine Hydrochloride
Diethylamine hydrochloride is the salt of diethylamine with HCl, explicitly covered under HTS 2921.19.11.00 as salts of ethylamines. Used in pharmaceutical intermediates.
Mono-n-butylamine
Mono-n-butylamine (CH3(CH2)3NH2) is a primary butyl-monoamine under HTS 2921.19.11.00. Essential for synthesis of herbicides and pharmaceuticals.
Dibutylamine
Dibutylamine ((C4H9)2NH), a di-butylamine, is classified in HTS 2921.19.11.00 as a derivative of butyl-monoamines. Used in epoxy curing agents.
Triethylamine Hydrochloride
Triethylamine hydrochloride salt is specifically included under HTS 2921.19.11.00 for salts of triethylamines. Common in organic synthesis as a mild acid scavenger.
Dipropylamine Phosphate
Dipropylamine phosphate salt falls under HTS 2921.19.11.00 as a salt of di-propylamine. Used in flame retardant formulations.
Monoisopropylamine
Monoisopropylamine ((CH3)2CHNH2) is included as a propyl-monoamine isomer under HTS 2921.19.11.00. Key ingredient in agricultural chemicals.
N,N-Diethyl-n-butylamine
N,N-Diethyl-n-butylamine combines ethyl and butyl groups, covered as mixed alkyl monoamine under HTS 2921.19.11.00. Used in specialty solvents.
Tri-n-butylamine
Tri-n-butylamine ((C4H9)3N) is a tertiary tri-butylamine explicitly listed under HTS 2921.19.11.00. Employed as an antifoaming agent.
Ethylenediamine (1,2-Diaminoethane)
Ethylenediamine (H2NCH2CH2NH2) qualifies as it contains monoethylamine moieties, under HTS 2921.19.11.00. Widely used in chelating agents and epoxy hardeners.
Diisopropylamine
Diisopropylamine ((CH3)2CHN H)2 is a di-propylamine isomer under HTS 2921.19.11.00. Critical for strong base applications in pharma synthesis.
Mono-n-propylamine
Mono-n-propylamine (CH3CH2CH2NH2) is a primary acyclic monoamine specifically listed under HTS 2921.19.11.00 for propyl-monoamines. Used in surfactant production and pesticide synthesis.
Tripropylamine
Tripropylamine ((C3H7)3N), a tertiary acyclic tri-propylamine, falls under HTS 2921.19.11.00. Applied in phase transfer catalysis and extraction processes.