Triphenyl Phosphate (TPP) from Mexico
Triphenyl phosphate serves as a flame retardant and plasticizer in rigid PVC, cellulose acetate, and synthetic resins. Classified under HTS 2919.90.50.50 as an 'other' phosphoric ester, it matches the chapter's scope for separate chemically defined organic phosphate compounds. Its aryl phosphate structure distinguishes it from alkyl phosphates listed elsewhere.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• Include CAS number (115-86-6) and purity analysis on commercial invoice to confirm classification as pure phosphoric ester
• Check REACH compliance if sourced from EU; US importers need TSCA certification
• Label containers properly to prevent confusion with restricted isomers like TOCP