99% Pure N-EtPFOSA Technical Grade from Mexico
High-purity N-ethyl perfluorooctane sulfonamide (99% pure) supplied as a technical grade chemical for industrial synthesis of fluoropolymers. It qualifies under HTS 2935.20.00.00 as a separate chemically defined sulfonamide, containing impurities within allowable limits per Chapter 29 note (a). Used in manufacturing oil-repellent textiles.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide lab assay reports confirming >98% purity to uphold 'chemically defined' status under Chapter 29
• Ensure packaging complies with DOT/UN hazmat regulations for fluorochemicals; include UN number if applicable
• Watch for PFAS restrictions under TSCA Section 5; pre-notify EPA for significant new uses