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Amine-function compounds > Acyclic polyamines and their derivatives; salts thereof: > Other
Duty Rate (from China)
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)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Subheadings
Products classified under HTS 2921.29.00
Ethylenediamine
Ethylenediamine is an acyclic polyamine with the formula H2NCH2CH2NH2, consisting of two primary amine groups connected by an ethylene bridge. It falls under HTS 2921.29.00 as an acyclic polyamine and its derivatives; salts thereof, specifically as a basic 'other' acyclic polyamine not enumerated elsewhere in the subheading. Commonly used in chelating agents, epoxy curing, and pharmaceutical synthesis.
Diethylenetriamine (DETA)
Diethylenetriamine is a linear acyclic polyamine (H2NCH2CH2NHCH2CH2NH2) used primarily as an epoxy resin curing agent. Classified under HTS 2921.29.00 as an 'other' acyclic polyamine derivative essential for industrial applications like adhesives and coatings.
Triethylenetetramine (TETA)
Triethylenetetramine is an acyclic tetraamine (H2N(CH2CH2NH)3H) widely used in curing epoxy resins for composites and adhesives. It qualifies under HTS 2921.29.00 as an other acyclic polyamine and derivatives thereof.
Hexamethylenediamine
Hexamethylenediamine (H2N(CH2)6NH2) is a straight-chain acyclic diamine used in nylon-6,6 polymer production. Falls under HTS 2921.29.00 as an other acyclic polyamine essential for synthetic fiber manufacturing.
1,3-Diaminopropane
1,3-Diaminopropane (H2N(CH2)3NH2) is an acyclic diamine used in curing agents and cross-linking applications. Classified in HTS 2921.29.00 as other acyclic polyamines not specifically named.
Ethylenediamine Dihydrochloride Salt
Ethylenediamine dihydrochloride is the salt form of ethylenediamine (H3NCH2CH2NH3Cl2), used in pharmaceutical intermediates and metal finishing. HTS 2921.29.00 covers it per chapter note (C) classifying organic salts with the parent polyamine.
N,N-Dimethylethylenediamine
N,N-Dimethylethylenediamine is a derivative of ethylenediamine with secondary/tertiary amine functions, used in polymer synthesis and as a ligand. As an acyclic polyamine derivative, it falls under HTS 2921.29.00 'other' category.
Propylenediamine
Propylenediamine (H2NCH2CH(NH2)CH3) is a branched acyclic diamine used in epoxy hardeners and fuel additives. Classified under HTS 2921.29.00 as other acyclic polyamines and their derivatives.
Tetraethylenepentamine (TEPA)
Tetraethylenepentamine is a higher acyclic polyamine (H2N(CH2CH2NH)4H) used in oilfield chemicals and asphalt modification. HTS 2921.29.00 captures it as 'other' acyclic polyamine.
1,6-Diaminohexane Dihydrochloride
The dihydrochloride salt of 1,6-diaminohexane provides stability for nylon intermediate applications. Per chapter note (C), organic salts classify with the parent acyclic polyamine under HTS 2921.29.00.
N-(2-Aminoethyl)propane-1,3-diamine
This triamine combines propane and ethylene diamine units, used in chelating agents and resin curing. As an acyclic polyamine derivative not specifically provided for, it belongs in HTS 2921.29.00.
Bis(hexamethylene)triamine
Bis(hexamethylene)triamine is a long-chain acyclic triamine used in high-performance polyamides. Classified as other acyclic polyamines under HTS 2921.29.00.
Diethylenetriamine Pentaacetic Acid (DTPA) Ammonium Salt
DTPA ammonium salt is a polyamine-polycarboxylic acid chelating agent used in agriculture and radiology. The polyamine backbone classifies it under HTS 2921.29.00 with salts following the organic base per chapter notes.
1,2-Propylenediamine
1,2-Propylenediamine is the vicinal isomer diamine used in chiral synthesis and epoxy systems. As an acyclic polyamine, it falls into HTS 2921.29.00 other category.
Polyetheramine D230 (Jeffamine D230)
Jeffamine D230 is a difunctional, primary amine-terminated polyether (MW ~230) used in polyurea elastomers and adhesives. The terminal acyclic polyamine functions classify it under HTS 2921.29.00 as other polyamine derivatives.