Tripropyl Trioxatriphosphinane Polymer Stabilizer from Canada
Technical grade 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide used in polymerization stabilization for engineering plastics production. This organo-inorganic compound is specifically named in HTS 2931.46.00.00 due to its unique caged phosphorus structure. Imported as stabilized solution in inert solvent per Chapter Note 1(e).
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Document solvent content <50% to qualify under Chapter Note 1(e) for transport solutions
• Provide REACH compliance documentation if transshipping from EU manufacturers
• Monitor for anti-dumping duties from specific Asian phosphorus chemical producers