2935.20.00.00 - N-Ethyl perfluorooctane sulfonamide

This HTS category, 2935.20.00.00, specifically classifies N-Ethyl perfluorooctane sulfonamide. This compound is a perfluorinated organic chemical characterized by the presence of an ethyl group attached to the nitrogen atom of the perfluorooctane sulfonamide structure. Its unique chemical properties, stemming from the strong carbon-fluorine bonds and the sulfonamide functional group, are key to its classification.

Distinguishing this entry from its siblings, 2935.10.00.00 covers the methyl analog, N-Methyl perfluorooctane sulfonamide. Other related sulfonamides, such as N-Ethyl -N-(2-hydroxyethyl)perfluorooctane sulfonamide (2935.30.00.00) and N-(2-hydroxyethyl)-N-methyl perfluorooctane sulfonamide (2935.40.00.00), are differentiated by the presence of the hydroxyethyl group in addition to the ethyl or methyl substituents. The broader category of "Other perfluorooctane sulfonamides" (2935.50.00.00) would encompass any perfluorooctane sulfonamides not explicitly listed in the preceding subheadings.

As this HTS code represents a leaf node, there are no further subcategories within this specific classification. Therefore, the focus for classification under 2935.20.00.00 is on accurately identifying the N-Ethyl perfluorooctane sulfonamide based on its chemical structure and ensuring it does not meet the criteria for any other explicitly defined perfluorooctane sulfonamide within Chapter 29. The presence of the ethyl group directly bonded to the sulfonamide nitrogen is the defining characteristic for inclusion in this subheading.