U.S. exports of N-Methyl Perfluorooctane Sulfonamide (HS 293510) totaled $35K in August 2026.
N-Methyl Perfluorooctane Sulfonamide imports of $8K in August 2026 ran 372% above the year-to-date monthly average of $2K.
Last updated: August 2026 dataN-Methyl perfluorooctane sulfonamide (N-MeFOSA) is a perfluoroalkyl substance (PFAS) precursor that the US EPA has targeted under its PFAS action framework due to its persistence and potential to degrade into perfluorooctane sulfonate (PFOS), a substance restricted under the Stockholm Convention. Classified under a single tariff line (2935100000), it is primarily used as a chemical intermediate in specialty coatings and surface-treatment applications. Italy leads US imports under this heading, with Canada and China also supplying material. Importers should monitor EPA Toxic Substances Control Act (TSCA) reporting and significant new use rule (SNUR) requirements, which can restrict or require advance notice for certain PFAS import activities.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
2 import shipments a month
EPA has issued Significant New Use Rules (SNURs) covering PFOS-related precursors, including N-MeFOSA, under TSCA Section 5. Importers must determine whether their intended use triggers a SNUR notification requirement before importation. Additionally, TSCA Section 8(a) PFAS reporting rules may require disclosure of import volumes and uses. Failure to comply can result in civil penalties; consulting an environmental regulatory attorney alongside a licensed customs broker is strongly recommended.
Unlike the broad sulfonamide heading (293590), which covers pharmaceutical and agrochemical sulfonamides, N-MeFOSA is a perfluoroalkyl compound with a distinct chemical identity warranting its own dedicated HS6 heading (293510). Its classification hinges on the perfluorooctane sulfonyl group rather than any drug or biocidal function, and it is not interchangeable with conventional sulfonamide drugs for either classification or regulatory purposes.
Trade Directory
List your company under HS 293510 — N-Methyl Perfluorooctane Sulfonamide, so the companies trading it can find you. Be the first supplier listed.
Subheading 2 of 6 in heading 2935
Subheading 293510 · $35K of $8.5M
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 |
|---|---|---|---|---|
| 2935100000 | N-Methyl Perfluorooctane Sulfonamide | $8K | 0.00% | 0.00% |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2935100000 | N-Methyl Perfluorooctane Sulfonamide | $35K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$8KYoY · free account
Exports
$35KYoY · free account
Low of 4 reported months · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $230K of N-Methyl Perfluorooctane Sulfonamide and exported $155K.
Fewer 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 4 of 12 months reported, exports 8 of 12 months reported. Source: U.S. Census Bureau.
Exports · August 2026
destination
Canada and Germany together take 100% of it.
customs district
origin
entry
rate provision · imports
100.0% enters free of duty; duty collected equals 0.00% of imports for consumption.