Tripropyl Phosphorothioate Flame Retardant Intermediate
This high-purity grade of 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide is used as an intermediate in synthesizing phosphorus-based flame retardants for plastics. It is classified under tariff item 2931.46.00 because the compound is explicitly named in the tariff description, and its use as an intermediate does not affect classification.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a derivative of the named compound, such as a salt or ester
Derivatives not specifically named in 2931.46.00 may be classified under other organo-inorganic compounds.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product is the exact compound named in the tariff item and not a derivative or salt
• Provide a certificate of analysis showing purity levels to support classification
• Be aware that if the product is further processed into a flame retardant, the final product may fall under a different heading
Related Products under Tariff item 2931.46.00
2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide
2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide is a specific non-halogenated organo-phosphorus compound with a trioxatriphosphinane ring structure and propyl groups attached to phosphorus atoms. It is classified under tariff item 2931.46.00 as it is explicitly named in the tariff description and meets the definition of an organo-inorganic compound under Chapter 29.
Cyclic Tripropyl Phosphonite Oxide Catalyst Precursor
This specialty chemical grade of 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide is used as a precursor for phosphinite-based catalysts in hydroformylation processes. It is classified under tariff item 2931.46.00 as the compound is specifically named in the tariff description, regardless of its intended use as a catalyst precursor.
Tripropyl Trioxatriphosphinane Polymer Stabilizer
This technical grade of 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide is used in polymerization stabilization for engineering plastics production. It is classified under tariff item 2931.46.00 as the compound is specifically named in the tariff description, and the technical grade still meets the definition of a separate chemically defined compound.