Triphenyl Phosphite from Canada
Triphenyl phosphite is a white crystalline solid used as a stabilizer in PVC plastics and as an antioxidant. Classified under HTS 2920.29.00.00 as a phosphite ester and its derivatives.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide FTIR spectrum analysis confirming P-OR structure to distinguish from phosphine oxides
• Solid form requires proper packaging certification for bulk chemical shipments
• Monitor TSCA inventory status; new phosphite formulations may require PMN notification