Perfluorooctane Sulfonamide Potassium Salt from Japan
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).
Duty Rate — Japan → United States
15%
Rate breakdown
9903.04.628.5%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Specify counterion (K+) and assay content in COA to prevent salt misclassification
• Use HDPE containers with PFAS-compatible liners
• Include pH stability data (>12) for aqueous solutions