MeFOSA (N-Methylperfluorooctanesulfonamide) Powder from Japan
MeFOSA powder is the solid form of N-methyl perfluorooctane sulfonamide, a fluorinated sulfonamide used in specialty chemical synthesis. Classified under HTS 2935.10.00.00 as it is a separate chemically defined organic sulfonamide compound per Chapter 29 note (a).
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include detailed spectroscopic data (NMR, MS) to authenticate structure during customs review
• Label containers with UN numbers for hazardous fluorochemical transport; comply with PFAS import notifications
• Prevent dust formation with anticaking agents only if necessary for transport per Chapter 29 note (f)