N-Ethyl-N-(2-Hydroxyethyl)perfluorooctane Sulfonamide
This is a specific perfluorinated sulfonamide compound with the chemical formula featuring a perfluorooctane chain attached to the sulfonamide group, along with N-ethyl and N-(2-hydroxyethyl) substituents. It falls under HTS 2935.30.00.00 as a chemically defined sulfonamide per Chapter 29 notes (a), used primarily in surfactants and fluorochemical applications. The compound's structure qualifies it directly under the subheading for this exact substance.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied as an aqueous solution or formulated mixture exceeding 10% concentration
Solutions of Chapter 29 compounds in solvents for transport fall under Chapter 38 if not qualifying under Chapter 29 note (e), as they become preparations rather than pure compounds.
If classified primarily by its perfluoroalkyl sulfonic acid derivative without sulfonamide nitrogen functions
Sulfonated derivatives without nitrogen-functions may shift to earlier Chapter 29 headings like 2904 for sulfonic acids, per the rule to classify in the last numerical heading.
If put up as a finishing agent for textiles or paper in retail packaging
When formulated specifically for finishing processes rather than as a pure compound, it may classify under Chapter 38 as a finishing agent instead of the base sulfonamide.
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Import Tips & Compliance
• Verify chemical purity and provide Certificate of Analysis (CoA) to confirm identity as the specific compound; ensure SDS includes PFAS regulatory compliance for EPA/TSCA; avoid misclassification as mixtures which may shift to Chapter 38
Related Products under HTS 2935.30.00.00
Perfluoroalkyl Sulfonamide PFAS Intermediate (EtFOSE)
EtFOSE, or N-Ethyl-N-(2-hydroxyethyl)perfluorooctane sulfonamide, serves as a key building block for synthesizing fluorosurfactants and PFAS polymers. Classified under HTS 2935.30.00.00 as it matches the exact sulfonamide description in the tariff, adhering to Chapter 29's scope for separate chemically defined organic compounds. Its perfluorinated structure and substituents define its chemical identity.
Fluorochemical Surfactant Building Block N-EtFOSE
N-EtFOSE is a fluorinated sulfonamide used as an intermediate in producing water- and oil-repellent coatings. It precisely matches HTS 2935.30.00.00 for N-Ethyl-N-(2-hydroxyethyl)perfluorooctane sulfonamide, a separate chemically defined compound under Chapter 29. The perfluoro chain and hydroxyethyl group characterize its sulfonamide classification.
High-Purity EtFOSE for Polymer Synthesis
This high-purity grade of N-Ethyl-N-(2-hydroxyethyl)perfluorooctane sulfonamide is optimized for polymerization into fluoropolymers. It is classified under HTS 2935.30.00.00 as the exact named sulfonamide, fitting Chapter 29's criteria for chemically defined organic compounds without impurities affecting classification. Used in surface treatment formulations.
Technical Grade Perfluorooctane Sulfonamide (N-Ethyl Hydroxyethyl)
Technical grade version contains minor impurities but remains the named N-Ethyl-N-(2-hydroxyethyl)perfluorooctane sulfonamide per Chapter 29 note (a). Classified in HTS 2935.30.00.00 for use in industrial wetting agents and emulsifiers. The principal compound defines the tariff heading.
PFOS-Derivative Sulfonamide for Textile Finishing
A PFOS-related sulfonamide, N-Ethyl-N-(2-hydroxyethyl)perfluorooctane sulfonamide, used in textile repellency treatments. Directly under HTS 2935.30.00.00 as a sulfonamide matching the subheading description and Chapter 29 purity standards. Its chemical definition prevails over application.