Ethyl Diphenylphosphinate from China
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 — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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