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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If impurity levels exceed chemically defined thresholds
High impurity mixtures classify as chemical products of 3824, not pure compounds of Chapter 29 note (a).
If for bulk perfluoroalkyl halides precursors
If emphasizing halide functions over sulfonamide, earlier numerical order in 2903 may apply before 2935.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products 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.
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.