Ethyl Diphenylphosphinate from Mexico
Ethyl diphenylphosphinate (Ph2P(O)OEt) contains two direct P-C bonds to phenyl groups, classifying as non-halogenated organo-phosphorus derivative under HTS 2931.49.0080. Used as flame retardant intermediate and oxidation reagent.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• TSCA registration verification required for US manufacturing use
• Purity >98% specification prevents mixture classification under 3824
• Flash point documentation for Class 3 flammable liquid shipping