N-Ethyl perfluorooctane sulfonamide
Sulfonamides: > N-Ethyl perfluorooctane sulfonamide
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Products classified under HTS 2935.20.00.00
N-Ethyl Perfluorooctane Sulfonamide (N-EtPFOSA)
N-Ethyl perfluorooctane sulfonamide is a chemically defined perfluoroalkyl sulfonamide compound used primarily as an intermediate in the synthesis of fluorochemical surfactants and repellents. It falls under HTS 2935.20.00.00 as a specific sulfonamide within Chapter 29, meeting the criteria for separate chemically defined organic compounds containing sulfur directly linked to carbon. This classification applies to its pure form, whether with stabilizers for transport or safety additives that do not alter its general use.
N-Ethyl Perfluorooctane Sulfonamide with Stabilizer
This is N-ethyl perfluorooctane sulfonamide formulated with an added stabilizer for preservation during transport, maintaining its identity as a chemically defined organic compound. Classified under HTS 2935.20.00.00 per Chapter 29 note (f), as the stabilizer is necessary and does not change its general chemical use. Commonly used in producing water-resistant coatings and as a PFAS intermediate.
99% Pure N-EtPFOSA Technical Grade
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.
N-Ethyl Perfluorooctane Sulfonamide Ethanol Solution
N-Ethyl perfluorooctane sulfonamide dissolved in ethanol at standard transport concentration for safety reasons, remaining classifiable as the pure compound. Falls under HTS 2935.20.00.00 per Chapter 29 note (e), as the solvent is solely for transport and not specific use. Applied in formulating stain-resistant finishes.