Tripropyl Trioxatriphosphinane Polymer Stabilizer from China
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 — China → United States
41.2%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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