Perfluoroalkyl Sulfonamide PFAS Intermediate (EtFOSE) from Germany
EtFOSE, or N-Ethyl-N-(2-hydroxyethyl)perfluorooctane sulfonamide, serves as a key building block for synthesizing fluorosurfactants and PFAS polymers. Classified under HTS 2935.30.00.00 as it matches the exact sulfonamide description in the tariff, adhering to Chapter 29's scope for separate chemically defined organic compounds. Its perfluorinated structure and substituents define its chemical identity.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Declare exact CAS number (1691-99-2 if applicable) and purity >98% on commercial invoice; check for PFOA/PFOS restrictions under TSCA; store in sealed containers to prevent stabilizer addition that could reclassify