Loading...
HSChapter 29
2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide is a cyclic organophosphorus triester used as a flame retardant and plasticizer intermediate in specialty polymer applications. Its dedicated HS subheading (293146) reflects the broader effort to enumerate specific organophosphorus compounds with potential dual-use relevance. Germany is the leading recorded US supplier, classified under HTS line 2931460000. The compound's phosphonate ester structure places it within a chemical family that warrants careful end-use documentation at US entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The compound functions as a reactive or additive flame retardant and plasticizer in polyurethane, epoxy, and other polymer systems, where its cyclic phosphonate structure contributes both phosphorus content for fire suppression and flexibility-enhancing properties.
Its classification under the organophosphorus derivatives heading warrants a review against current CWC Schedule lists and BIS Export Administration Regulations before import. Importers should confirm the compound's specific regulatory status with compliance counsel, as the CWC's scope can extend to structurally related phosphonate esters.
Subheading 12 of 17 in heading 2931
Subheading 293146 · $0 of $69.3M
Supplier Network
Get discovered by U.S. importers searching for HS 293146 — 2,4,6-Tripropyl-1,3,5,2,4,6-Trioxatriphosphinane 2,4,6-Trioxide. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share |
|---|---|---|---|---|
| 2931460000 | Org-Phos Drtvs:2,4,6-Tripropyl-1,3,5,2,4,6-Triox.. | $0 | -- | -- |
Imports · July 2026
origin
customs district
destination
entry
rate provision · imports
None recorded for this period.
ImportsExports
Imports
$0YoY · Pro
Exports
$0YoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.