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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-polymerized into unsaturated polyester or acrylic resins
Polymerized forms exceed Chapter 29 scope, classifying under Chapter 39 as plastics even if sulfonamide-derived.
If for inorganic salts of the sulfonamide if metal-complexed
Chapter 29 note on salts classifies inorganic salts with the organic base in 2935, but simple sulfamates may go to Chapter 28 if inorganic-dominant.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Request supplier's TSCA certification for US entry; use UN-approved packaging for corrosive fluorochemicals; monitor for anti-dumping duties on Chinese-origin PFAS
Related Products under HTS 2935.30.00.00
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.
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.
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.