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HSChapter 29
U.S. imports of phenylenediamines, diaminotoluenes, and related aromatic polyamines (HS 292151) totaled $9.6M in April 2026, traded with 10 countries.
Importers of Phenylenediamines, Diaminotoluenes, and Related Aromatic Polyamines paid $1.9M in duties in April 2026 — an effective duty rate of 20% on $9.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Phenylenediamines, Diaminotoluenes, and Related Aromatic Polyamines imports of $9.6M in April 2026 ran 16% below the year-to-date monthly average of $11.4M.
Last updated: April 2026 dataPhenylenediamines 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.
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.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| INDIA | $2.1M | $173K | -$1.9M |
| BELGIUM | $2.0M | $139K | -$1.8M |
| CHINA | $1.8M | $144K | -$1.6M |
| KOREA, SOUTH | $1.6M | $77K | -$1.5M |
| GERMANY | $1.5M | $9K | -$1.5M |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2921515000 | OTHER AROM POLYAMINES ETC,OF PROD IN US NT3 SEC6 | $6.4M | 15.71% | $1.0M |
| 2921511000 | M-PHENYLENEDIAMINE; 0-PHENYLENEDIAMINE,ETC | $3.2M | 28.81% | $918K |
| 2921512000 | AROMAT POLYAMINES ETC USED AS PHOTOGRAPHIC CHEM | $38K | 16.50% | $6K |
| 2921513000 | AROMAT POLYAMINES,ETC,OF PROD IN US NOTE 3 SEC 6 | $19K | 41.50% | $8K |
OTHER AROM POLYAMINES ETC,OF PROD IN US NT3 SEC6
M-PHENYLENEDIAMINE; 0-PHENYLENEDIAMINE,ETC
AROMAT POLYAMINES ETC USED AS PHOTOGRAPHIC CHEM
AROMAT POLYAMINES,ETC,OF PROD IN US NOTE 3 SEC 6
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2921510000 | O-, M-, P-PHENYLENEDIAMINE, DIAMINOTOLUENES ETC | $1.2M |
O-, M-, P-PHENYLENEDIAMINE, DIAMINOTOLUENES ETC
268.1K kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $2.7M | $146K | -$2.6M |
| South Carolina | $2.9M | $20K | -$2.8M |
| Ohio | $2.1M | $165K | -$1.9M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | $3.2M | -- | -$3.2M |
| HOUSTON, TX | $2.9M | $120K | -$2.8M |
| NEWARK, NJ | $595K | $320K | -$275K |