Triethylammonium Perfluorooctane Sulfonate from Mexico
Triethylammonium perfluorooctane sulfonate is an ionic liquid precursor from PFOS and triethylamine. It fits HTS 2904.35.00.00 for other PFOS salts as a chemically defined sulfonated perfluoro compound.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Classify based on parent acid (later numerical order); include comparative spectra
• Global phase-out tracking required; many countries ban new PFOS registrations
• Avoid anti-dusting agents unless for identification per note (g)