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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported primarily as alcohol derivative
Chapter notes prioritize alcohol classification (2905) over sulfonamide if oxygen function defines character.
If for corresponding saturated carboxylic acid derivatives
Carboxylic acid analogs classify under 2915 occurring later than sulfonamides.
If technical grade with >20% impurities
Preparations not meeting 'separate chemically defined' criteria fall to Chapter 38 mixtures.
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Import Tips & Compliance
• Label containers with GHS corrosive pictograms due to sulfonamide acidity
• Provide HPLC purity certificates (>98%) to distinguish from technical grade mixtures
• Declare exact carbon chain length (C8) to prevent confusion with shorter-chain PFAS analogs
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-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).
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.