Ethyl Diphenylphosphinate from Mexico
Ethyl diphenylphosphinate (Ph2P(O)OEt) combines phenyl-P-C bonds with ester functionality, used in specialty polymers. Falls under HTS 2931.49.00 as other non-halogenated organo-phosphorus compounds. Chapter 29 note 3(A) directs classification to later numerical heading.
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
• Molecular weight certification confirms pure compound status vs. mixtures
• For ester classification conflicts, emphasize P-C bonding characteristic
• TSCA inventory check mandatory; new chemicals require PMN submission