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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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China6.5%+25.0%31.5%
🇲🇽Mexico6.5%—6.5%
🇨🇦Canada6.5%—6.5%
🇩🇪Germany6.5%—6.5%
🇯🇵Japan6.5%—6.5%

More Specific Codes

This product may fall under a more specific subheading:

2921.29.00.10Tetraethylene pentamine
→
2921.29.00.20Triethylenetetramine
→
2921.29.00.30Diethylenetriamine
→
2921.29.00.55Other
→

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2922.50Lower: 16.5% vs 31.5%

If pure acid form

Free carboxylic acid classifies as amino-acid compounds in 2922.

3808.93.50Higher: 40% vs 31.5%

If herbicide preparation

Formulated crop protection products in Chapter 38.

3006Lower: 15% vs 31.5%

If radiopharmaceutical kit

Diagnostic imaging kits move to Chapter 30.

Not sure which classification is right?

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Import Tips & Compliance

• Chelate stability constants in specs; agricultural use statements critical; EPA registrations for pesticide applications

Related Products 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.