Loading...
HSChapter 29
U.S. exports of n-methyl perfluorooctane sulfonamide (HS 293510) totaled $27K in June 2026, traded with 1 country.
Last updated: June 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.
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.
Supplier Network
Get discovered by U.S. importers searching for HS 293510 — N-Methyl Perfluorooctane Sulfonamide. 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 | Import Value | Effective Tariff % | Dutiable Share |
|---|---|---|---|---|
| 2935100000 | N-METHYL PERFLUOROOCTANE SULFONAMIDE | $0 | -- | -- |
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 | $27K |
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 |
|---|---|---|---|
| California | -- | $27K | +$27K |
| New Jersey | -- | -- | -- |
| Kentucky | -- | -- | -- |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CLEVELAND, OH | -- | $23K | +$23K |
| HONOLULU INTERNATIONAL AIRPORT, HI | -- | $4K | +$4K |
| ANCHORAGE, AK | -- | -- | -- |
| Country | Imports | Exports | Balance |
|---|---|---|---|
| JAPAN | -- | $23K | +$23K |
| AUSTRALIA | -- | $4K | +$4K |
| GERMANY | -- | -- | -- |
| CHINA | -- | -- | -- |
| SWITZERLAND | -- | -- | -- |
Monthly import values over time