2935.40.00.00 - N-(2-hydroxyethyl)-N-methyl perfluorooctane sulfonamide

This classification, HTS Code 2935.40.00.00, specifically covers N-(2-hydroxyethyl)-N-methyl perfluorooctane sulfonamide. This compound is a particular type of sulfonamide characterized by the presence of both a hydroxyethyl group and a methyl group attached to the nitrogen atom of the perfluorooctane sulfonamide structure. Its intended use within the chemical industry, such as in specialized surface treatments or as an intermediate in further synthesis, would align with its classification under this specific code.

Distinguishing this category from its siblings, the key differentiator lies in the precise substituent groups on the sulfonamide nitrogen. While 2935.10.00.00 covers the N-methyl derivative without the hydroxyethyl group, and 2935.20.00.00 pertains to the N-ethyl derivative, and 2935.30.00.00 is for the N-ethyl-N-(2-hydroxyethyl) variant, this code is reserved for the compound with both N-methyl and N-(2-hydroxyethyl) substituents. Category 2935.50.00.00 encompasses other perfluorooctane sulfonamides not explicitly listed, and 2935.90 covers other sulfonamides beyond those derived from perfluorooctane.

As this is a leaf node within the HTS system, there are no further subdivisions. Classification within 2935.40.00.00 is therefore determined solely by the chemical identity of the imported or exported substance matching the description of N-(2-hydroxyethyl)-N-methyl perfluorooctane sulfonamide. The presence of the specific hydroxyethyl and methyl groups on the sulfonamide nitrogen atom is the definitive criterion for classification under this code.