U.S. imports of Aromatic Polyamines (NESOI) and Their Derivatives (HS 292159) totaled $7.6M in August 2026, imported from 13 countries.
Importers of Aromatic Polyamines (NESOI) and Their Derivatives paid $1.6M in duties in August 2026, an average duty rate of 21.49% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Aromatic Polyamines (NESOI) and Their Derivatives imports of $7.6M in August 2026 ran 12% above the year-to-date monthly average of $6.8M.
Last updated: August 2026 data4,4'-Methylenedianiline (MDA, at 2921593000) is a critical precursor to MDI-based polyurethanes and is widely traded for use in adhesives, coatings, and elastomers, while 4,4-diamino-2,2-stilbenedisulfonic acid (2921592000) serves as a fluorescent whitening agent intermediate. Japan and India are the leading US suppliers under this heading, with Switzerland and China also notable sources. The presence of 3,3'-dichlorobenzidine dihydrochloride (2921598010) — a regulated carcinogen — means that certain lines may attract heightened scrutiny from EPA and OSHA compliance programs in addition to standard CBP entry requirements.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
88 import shipments a month
3,3'-Dichlorobenzidine is classified as a probable human carcinogen and is subject to EPA Toxic Substances Control Act (TSCA) reporting and recordkeeping requirements. Importers must ensure TSCA compliance certification is filed at entry, and downstream handling is subject to OSHA hazard communication standards.
MDA (4,4'-methylenedianiline) is an aromatic diamine classified at 2921593000, while MDI (methylene diphenyl diisocyanate) is an isocyanate classified in a different chapter. The two are chemically related but structurally distinct; classification hinges on whether the nitrogen functional group is an amine or an isocyanate, and misclassification between chapters can result in significant duty differences.
Subheading 7 of 18 in heading 2921
Subheading 292159 · $7.6M of $109.9M
Trade Directory
List your company under HS 292159 — Aromatic Polyamines (NESOI) and Their Derivatives, so the companies trading it can find you. Be the first supplier listed.
ImportsExports
Imports
$7.6MYoY · free account
Exports
$1.0MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $81.8M of Aromatic Polyamines (NESOI) and Their Derivatives and exported $16.9M.
Through August 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 2921598090 | Aromatic Polyamines & Derivatives & Salts NESOI | $4.4M | 23.65% | 100.00% | $1.0M |
| 2921591700 | 4,4'-Benzidn-2,2'-Disulfonc Acd;1,4-Diaminbenz Etc | $1.6M | 19.15% | 92.45% | $307K |
| 2921594000 | Arom Polyamines Etc of Prod in U.s.note 3 Sect 6 | $798K | 12.38% | 100.00% | $99K |
| 2921590800 | 5-Amino-2-(P-Aminoanilino)-Benzenesulfon Acid Etc | $392K | 21.70% | 100.00% | $85K |
| 2921592000 | 4,4-Diamino-2,2-Stilbenedisulfonic Acid | $245K | 36.84% | 100.00% | $90K |
| 2921593000 | 4,4-Methylenedianiline | $156K | 10.00% | 100.00% | $16K |
| 2921598010 | 3,3'-Dichlorobenzidine Dihydrochloride | $96K | 16.50% | 100.00% | $16K |
| 2921590400 | 1,8-Diaminonapthalene (1,8-Napthalenediamino) | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2921590000 | Aromatic Polyamines and Their Derivatives, NESOI | $1.0M |
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
India and China together supply 57% of it. China pays 42.4% duty; Taiwan 10.0%.
customs district
destination
entry
rate provision · imports
1.6% enters free of duty; duty collected equals 21.49% of imports for consumption.