Subheading 37 of 41 in heading 2903
Hexachlorocyclohexane (HCH) and its gamma isomer lindane are persistent organochlorine pesticides subject to the Stockholm Convention on Persistent Organic Pollutants, which restricts their production and trade to narrow pharmaceutical exemptions (lindane is still permitted in certain pharmaceutical-grade lice treatments). All US imports enter under a single tariff line (2903810000), and India is the leading supplier. Importers should be aware that EPA and potentially FDA oversight applies depending on the intended end use, and the Stockholm Convention's prior informed consent procedures may be triggered for non-exempt applications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Lindane's import and use are heavily restricted under the Stockholm Convention and US EPA regulations. The only currently recognized exemption for lindane in the US is as a second-line pharmaceutical treatment for head lice and scabies, subject to FDA oversight. Imports for agricultural or general pesticidal use are not permitted, and any shipment must clearly document the qualifying pharmaceutical end use.
Under the Stockholm Convention, parties exporting listed POPs — including HCH isomers — to non-party or restricted-use countries must follow prior informed consent (PIC) notification procedures. US importers receiving HCH from a Convention party for a non-exempt purpose may find the exporting country unwilling or legally unable to ship, making documentation of a qualifying exemption essential before contracting.
Trade Directory
List your company under HS 290381 — 1,2,3,4,5,6-Hexachlorocyclohexane (Including Lindane), so the companies trading it can find you. Be the first supplier listed.
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 |
|---|---|---|---|---|
| 2903810000 | 1,2,3,4,5,6-Hexachlorocyclohexane | — | -- | -- |
ImportsExports
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Low of 2 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 August 2026 · imports 2 of 12 months reported, exports 6 of 12 months reported. Source: U.S. Census Bureau.
Imports · August 2026
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None recorded for this period.