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HSChapter 29
Both hexachlorobenzene (HCB) and dichlorodiphenyltrichloroethane (DDT) are persistent organic pollutants listed under the Stockholm Convention, and their production and use are effectively banned or severely restricted in most jurisdictions, including the United States. The single tariff line (2903920000) covers both substances, and any US import would require rigorous documentation of a permitted use — such as laboratory reference standards or treaty-compliant exemptions. Taiwan is the recorded US supplier under this heading, a narrow sourcing base consistent with the extremely limited legitimate trade in these compounds.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Both substances are banned for virtually all uses in the US. Importation is permissible only for very narrow purposes such as analytical reference standards, scientific research, or uses explicitly exempted under applicable law. Any such import requires advance coordination with EPA and potentially other agencies, and the importer bears the burden of demonstrating a lawful end use.
The broker should obtain a detailed statement of intended use from the importer, verify that the shipment volume and packaging are consistent with a legitimate exempted purpose (e.g., laboratory quantities), and confirm that no EPA or other agency holds apply. Given the Stockholm Convention listing and domestic restrictions, CBP may refer such entries for agency review, so proactive pre-entry communication with the relevant agencies is advisable.
Supplier Network
Get discovered by U.S. importers searching for HS 290392 — Hexachlorobenzene and DDT. Be the first supplier listed.
Monthly import values over time
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 |
|---|---|---|---|---|---|
| 2903920000 | HEXACHLOROBENZENE AND DDT | $3K | 5.49% | 100.00% | $153 |
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
BENZENE
HS 290220
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
HETEROCYCLIC COMP WITH UNFUSED PYRAZOLE RING NESOI
HS 293319
| State | Imports | Exports | Balance |
|---|---|---|---|
| New York | -- | -- | -- |
| Pennsylvania | -- | -- | -- |
| Texas | -- | -- | -- |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| JFK INTERNATIONAL AIRPORT, NY | -- | -- | -- |
| BROWNSVILLE, TX | -- | -- | -- |
| LAREDO, TX | -- | -- | -- |