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Harmonized System
U.S. exports of dimethyl propylphosphonate (HS 293142) totaled $4K in November 2025, traded with 2 countries.
Last updated: November 2025 dataDimethyl propylphosphonate is a specific organophosphorus ester classified under a single US tariff line (2931420000) with no further subdivision. Its chemical structure — a phosphonate ester with a propyl group — places it within the Chemical Weapons Convention (CWC) schedule of precursor chemicals, meaning importers must be prepared for heightened scrutiny and potential licensing requirements. End uses span flame retardants, plasticizers, and specialty chemical synthesis, making accurate classification against related phosphonate esters a recurring compliance challenge.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Certain phosphonate esters, including dimethyl propylphosphonate, fall within Chemical Weapons Convention schedules as precursor chemicals. Importers may face additional licensing, end-use certification, or reporting requirements depending on the transaction and the importing party's regulatory obligations.
The US schedule isolates dimethyl propylphosphonate in its own 10-digit line (2931420000), separate from the broader 'non-halogenated organo-phosphorous derivatives NES' basket. Correct classification hinges on confirming the specific propyl substituent and the dimethyl ester configuration rather than grouping it with structurally similar compounds.
HSChapter 29
Subheading 8 of 17 in heading 2931
Subheading 293142 · $0 of $69.3M
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ImportsExports
Exports
$0YoY · Pro
Fewer 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.
Exports · November 2025
destination
customs district
origin
entry
rate provision · imports
None recorded for this period.