Subheading 39 of 41 in heading 2903
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.
Trade Directory
List your company under HS 290392 — Hexachlorobenzene and DDT, so the companies trading it can find you. Be the first supplier listed.
ImportsExports
Imports
—YoY · free account
Exports
—YoY · free account
Low of 5 reported months · imports
Low · free accountFewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through December 2025 · imports 5 of 12 months reported, exports 1 of 12 months reported. 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 |
|---|---|---|---|---|---|
| 2903920000 | Hexachlorobenzene and Ddt | $3K | 5.49% | 100.00% | $153 |
Imports · December 2025
origin
customs district
None recorded for this period.
destination
None recorded for this period.
entry
None recorded for this period.
rate provision · imports
None recorded for this period.