N-Ethyl Perfluorooctane Sulfonamide (N-EtPFOSA) from Germany

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.