Diethanolamine Perfluorooctane Sulfonate from Mexico
Organic salt formed between diethanolamine and PFOS, classified with the later-occurring sulfonated acid per Chapter 29 note on salts (C)(2). Falls under HTS 2904.31.00.00 as the PFOS component dominates.
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
• Document both organic components for salt classification verification
• Test for ionic dissociation to confirm true salt vs physical mixture
• Include REACH registration numbers for both amine and PFOS components