Tripropyl Trioxatriphosphinane Polymer Stabilizer
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).
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for other non-halogenated organo-phosphorus compounds like phosphonates
The tariff specifically names this trioxatriphosphinane structure at 2931.46; similar but different phosphorus compounds classify elsewhere in 2931.49.
If significant carboxylic acid phosphorus ester functions present
Oxygen-function compounds with carboxylic characteristics would classify later per Chapter Note 4, but primary organo-inorganic nature prevails.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under HTS 2931.46.00.00
2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide
This is a specific non-halogenated organo-phosphorus compound featuring a trioxatriphosphinane ring structure with propyl groups attached to phosphorus atoms. It falls under HTS 2931.46.00.00 as a distinct organo-inorganic compound in the category of non-halogenated organo-phosphorus derivatives. Primarily used as a chemical intermediate in organic synthesis and flame retardant production.
Tripropyl Phosphorothioate Flame Retardant Intermediate
A high-purity grade of 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide used specifically as an intermediate in synthesizing phosphorus-based flame retardants for plastics. Classified under HTS 2931.46.00.00 due to its precise organo-phosphorus cyclic structure without halogens. Supplied as white crystalline powder for industrial chemical processing.
Cyclic Tripropyl Phosphonite Oxide Catalyst Precursor
Specialty chemical grade 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide serving as precursor for phosphinite-based catalysts in hydroformylation processes. Falls squarely under HTS 2931.46.00.00 as a non-halogenated organo-phosphorus derivative with defined trioxatriphosphinane structure. Typically packaged in 25kg fiber drums for chemical manufacturers.