Lithium Perfluorooctane Sulfonate from Mexico
Lithium salt form of PFOS, recognized as the same chemically defined compound under HTS 2904.31.00.00. The sulfonated perfluorocarbon structure dominates classification per Chapter 29 salt rules. Applied in electrochemical and surfactant formulations.
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
• Include molecular formula verification (LiC8F17SO3) and purity >98% certification
• Monitor EU POPs Regulation 2019/1021 import prohibitions for PFOS salts
• Use UN 2923 proper shipping name for corrosive solids during transport