Potassium Perfluorooctane Sulfonate from Mexico
Potassium perfluorooctane sulfonate (potassium PFOS) is a perfluorinated sulfonate salt used in specialty chemical applications. Classified under HTS 2904.35.00.00 as an 'other salt' of perfluorooctane sulfonic acid, fitting chapter 29 for halogenated sulfonated hydrocarbon derivatives.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Comply with international PFOS bans; secure prior import notifications to EPA under SNUR (Significant New Use Rule)
• Label shipments with CAS number 2795-39-3 and full chemical identity to prevent customs holds
• Test for impurities; chapter excludes mixtures unless meeting stabilizer provisions in notes (f)-(g)