Perfluorooctanesulfonamide (PFOSA) Hydroxyethyl Derivative from Mexico
A derivative of perfluorooctanesulfonic acid amidated with N-methyl-N-(2-hydroxyethyl), this sulfonamide is a key building block for fluoropolymers. Classified under HTS 2935.40.00.00 as it matches the exact subheading for this chemically defined sulfonamide. Used in synthesis of surfactants and coatings.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Obtain TSCA certification for US import and declare PFAS content; use bulk industrial packaging to maintain Chapter 29 classification
• Monitor for evolving restrictions on perfluoroalkyl substances