Diethyl Phosphite Flame Retardant Intermediate from Mexico
Diethyl phosphite used to synthesize phosphorus-based flame retardants for textiles and plastics. Classified HTS 2920.22.00.00 as phosphite ester essential for organophosphorus polymer additives.
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
• Include REACH Annex XVII flame retardant documentation if EU origin
• Verify P-content analysis (23-24%); variance indicates mixture classification
• Large volume imports (>20MT) require EPA pre-manufacture notification