MeFOSA (N-Methylperfluorooctanesulfonamide) Powder from China
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 — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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)