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U.S. imports of phenylenediamines, diaminotoluenes, and related aromatic polyamines (HS 292151) totaled $7.5M in July 2026, traded with 11 countries.
Subheading 6 of 18 in heading 2921
Subheading 292151 · $7.5M of $80.2M
Importers of Phenylenediamines, Diaminotoluenes, and Related Aromatic Polyamines paid $1.3M in duties in July 2026 — an effective duty rate of 18% on $7.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Phenylenediamines, Diaminotoluenes, and Related Aromatic Polyamines imports of $7.5M in July 2026 ran 24% below the year-to-date monthly average of $9.9M.
Phenylenediamines and diaminotoluenes are foundational intermediates in the production of dyes, rubber antioxidants, epoxy curing agents, and polyurethane isocyanates, making this heading commercially significant across the chemicals, automotive, and textile sectors. A dedicated line (2921512000) covers aromatic polyamines used as photographic chemicals, reflecting the heading's breadth across end-use industries. India and Belgium are the top US suppliers, with South Korea and Germany also prominent sources. Compounds originating from China may be subject to Section 301 tariffs, and classification between the photographic-chemical line and the general industrial lines requires careful review of end-use documentation.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
122 shipments/mo
Line 2921512000 is reserved for aromatic polyamines and their derivatives specifically used as photographic chemicals. If the compound serves a dual-use role — for example, as both a photographic developer and a dye intermediate — the principal use at the time of importation typically governs classification, and supporting documentation such as a technical data sheet or end-use certificate may be required.
Lines designated as 'products of US Note 3, Section VI' (2921513000) apply to certain chemicals that are produced in the United States and re-imported, potentially qualifying for a reduced or duty-free rate on the US-origin value. Importers must substantiate the US-origin content with appropriate documentation to claim this treatment.
HSChapter 29
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2921515000 | Other Arom Polyamines Etc,of Prod in US Nt3 Sec6 | $6.5M | 14.77% | 95.06% | $964K |
| 2921511000 | M-Phenylenediamine; 0-Phenylenediamine,Etc | $986K | 33.38% | 101.10% | $329K |
| 2921513000 | Aromat Polyamines,Etc,of Prod in US Note 3 Sec 6 | $2K | 41.49% | 100.00% | $838 |
| 2921512000 | Aromat Polyamines Etc Used As Photographic Chem | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2921510000 | O-, M-, P-Phenylenediamine, Diaminotoluenes Etc | $3.4M |
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.
ImportsExports
Imports
$7.5MYoY · Pro
Exports
$3.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Belgium and Korea, South together supply 55% of it.
customs district
destination
entry
rate provision · imports
3.9% enters free of duty; the effective duty rate is 17.22%.