HSChapter 38
Harmonized System
Perfluorooctane sulfonic acid (PFOS) and its derivatives are among the most scrutinized per- and polyfluoroalkyl substances (PFAS) in global trade, listed under the Stockholm Convention and subject to EPA regulatory action under TSCA, including a proposed rule to designate PFOS as a hazardous substance under CERCLA. The single tariff line 3824870000 captures all mixtures in which PFOS, its salts, sulfonamides, or sulfonyl fluoride are the defining constituents. Brazil and South Korea are the leading US import sources for this heading, reflecting specialty chemical and fluorochemical manufacturing capacity in both countries.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
EPA has taken multiple regulatory actions targeting PFOS under TSCA, including significant new use rules (SNURs) that require pre-manufacture or pre-import notification for certain PFOS-containing articles and chemical preparations. Importers should monitor EPA's PFAS action plan and consult regulatory counsel, as new restrictions can take effect with limited lead time.
Heading 382487 is specifically limited to preparations where PFOS, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride are the active constituents. Mixtures containing other PFAS compounds — such as PFOA or short-chain fluorosurfactants — that do not contain PFOS derivatives would fall outside this heading and be classified elsewhere, typically under the residual heading 382499.
Trade Directory
List your company under HS 382487 — Mixtures and Preparations Containing Perfluorooctane Sulfonic Acid (PFOS), Its Salts, Sulfonamides, or Sulfonyl Fluoride, so the companies trading it can find you. Be the first supplier listed.
Subheading 17 of 17 in heading 3824
ImportsExports
Imports
—YoY · free account
Exports
—YoY · free account
12-mo low · imports
YoY · free accountFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through August 2026. 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 | Import Value | Effective Tariff % | Dutiable Share |
|---|---|---|---|---|
| 3824870000 | Mix Halog Hydrocarbs,Perfluoroctne Sulf Acid,Etc.. | — | -- | -- |
Imports · August 2026
origin
customs district
destination
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rate provision · imports
None recorded for this period.