U.S. imports of Acyclic Polyamines, Derivatives, and Salts (NESOI) (HS 292129) totaled $19.0M in August 2026, imported from 22 countries.
Importers of Acyclic Polyamines, Derivatives, and Salts (NESOI) paid $1.9M in duties in August 2026, an average duty rate of 10.06% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Acyclic Polyamines, Derivatives, and Salts (NESOI) imports of $19.0M in August 2026 ran 63% above the year-to-date monthly average of $11.6M.
Last updated: August 2026 dataEthyleneamine oligomers — diethylenetriamine (DETA, 2921290030), triethylenetetramine (TETA, 2921290020), and tetraethylenepentamine (TEPA, 2921290010) — are the commercially significant members of this residual acyclic polyamine heading, each serving distinct roles as epoxy curing agents, fuel additives, and chelant precursors. Japan and Germany are the leading sources of US imports under this heading, reflecting the concentration of specialty chemical manufacturing in those countries. The catch-all line 2921290055 captures higher ethyleneamines and other acyclic polyamine derivatives not enumerated elsewhere, requiring careful classification review when importing novel or blended amine products.
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200 import shipments a month
Classification follows the GRI rules: if the product is a pure or commercially defined single compound matching DETA, TETA, or TEPA, it should be classified under the corresponding specific line. Blends or higher oligomers not individually enumerated fall to 2921290055. A binding ruling from CBP is advisable for novel or proprietary amine mixtures.
TETA is primarily consumed as an epoxy resin curing agent in coatings, adhesives, and composites. DETA serves as a chelant intermediate (for DTPA synthesis) and a textile softener precursor. Demand in both cases tracks construction activity and specialty coatings production cycles.
Subheading 3 of 18 in heading 2921
Subheading 292129 · $19.0M of $109.9M
ImportsExports
Imports
$19.0MYoY · free account
Exports
$13.4MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $136.9M of Acyclic Polyamines, Derivatives, and Salts (NESOI) and exported $132.2M.
Through August 2026. Source: U.S. Census Bureau.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2921290055 | Other Acyclic Polyamines and Deriv; Salts Thereof | $14.4M | 9.79% | 86.47% | $1.4M |
| 2921290030 | Diethylenetriamine | $2.0M | 10.48% | 100.00% | $213K |
| 2921290020 | Triethylenetetramine | $1.6M | 11.17% | 99.82% | $175K |
| 2921290010 | Tetraethylene Pentamine | $914K | 11.53% | 100.00% | $105K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2921290055 | Other Acyclic Polyamines and Deriv; Salts Thereof | $6.5M |
| 2921290020 | Triethylenetetramine | $3.4M |
| 2921290010 | Tetraethylenepentamine | $1.9M |
| 2921290030 | Diethylenetriamine | $1.6M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Switzerland and Japan together supply 41% of it. Japan pays 12.4% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
10.3% enters free of duty; duty collected equals 10.06% of imports for consumption.