N-Methylperfluorooctane Sulfonamide
N-Methylperfluorooctane sulfonamide (N-MePFOSA) is a separate chemically defined compound used in manufacturing water- and oil-repellent coatings. Classified under HTS 2935.50.00.00 as a perfluorooctane sulfonamide per Chapter 29 note (a).
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing additional organo-sulfur linkages beyond sulfonamide
Heading 2930 covers other organo-sulfur compounds occurring later in numerical order per classification note 3.
If for derivatives with additional heterocyclic nitrogen functions
Other organic compounds with nitrogen functions classify under 2942 if not specifically provided for earlier.
If when finishing agents containing >50% active sulfonamide
Formulations for textile finishing move to Chapter 38 as finishing agents rather than pure compounds.
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Import Tips & Compliance
• Submit TSCA certification for PFAS chemicals to meet EPA pre-manufacture notification requirements
• Ensure CAS number 31506-32-8 documentation matches exactly for customs verification
• Avoid bulk packaging that could trigger Chapter 38 mixture classification
Related Products under HTS 2935.50.00.00
N-Ethylperfluorooctane Sulfonamide
N-Ethylperfluorooctane sulfonamide (N-EtPFOSA) is a chemically defined perfluorooctane sulfonamide used primarily as an intermediate in the synthesis of fluorosurfactants. It falls under HTS 2935.50.00.00 as it is specifically listed among other perfluorooctane sulfonamides, which are organo-sulfur compounds with the characteristic sulfonamide group.
N-Ethyl-N-(2-hydroxyethyl)perfluorooctane Sulfonamide
This hydroxyethyl-substituted perfluorooctane sulfonamide serves as a reactive intermediate for fluoropolymer synthesis. It qualifies under HTS 2935.50.00.00 as 'other perfluorooctane sulfonamides' meeting Chapter 29's chemically defined organic compound criteria.
Perfluorooctane Sulfonamide (PFOSA)
The parent perfluorooctane sulfonamide (PFOSA) compound used in analytical standards and research. Falls squarely under HTS 2935.50.00.00 as the base structure for all 'other perfluorooctane sulfonamides'.
N-Methylperfluorooctane Sulfonamido Ethanol (MeFOSE)
MeFOSE is a key building block for producing fluorochemical polymers used in surface treatments. Classified under HTS 2935.50.00.00 as it is chemically defined perfluorooctane sulfonamide alcohol.
Perfluorooctane Sulfonamide Potassium Salt
The potassium salt form of perfluorooctane sulfonamide used in aqueous fluorosurfactant formulations. Classifies under HTS 2935.50.00.00 following the parent organic compound per Chapter note 4(C)(1).
N-Ethylperfluorooctane Sulfonamide (EtFOSA)
EtFOSA serves as a degradation product marker and synthetic intermediate in PFAS research. Meets HTS 2935.50.00.00 criteria as a separate, chemically defined perfluorooctane sulfonamide.