Perfluorooctane Sulfonic Acid (PFOS) from Mexico
Perfluorooctane sulfonic acid (PFOS) is a fully fluorinated organic compound with a sulfonate group, classified under HTS 2904.31.00.00 as a sulfonated, halogenated derivative of hydrocarbons. It is used in chemical synthesis and industrial applications, meeting Chapter 29 note (a) for separate chemically defined organic compounds.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify compliance with EPA and TSCA regulations due to PFOS restrictions under POPs convention; obtain prior approvals
• Include detailed chemical purity certificates and CAS number (1763-23-1) in documentation
• Avoid misclassification as mixtures; ensure product is pure PFOS, not diluted beyond Chapter 29 note (d)