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Harmonized System
Trichlorfon is an organophosphate insecticide and antiparasitic agent used in veterinary medicine, aquaculture, and certain agricultural applications; its ISO common name designation reflects its status as a recognized active ingredient under international pesticide nomenclature. Germany is the leading recorded US supplier, reflecting Europe's established specialty agrochemical manufacturing base. Importers should note that trichlorfon's pesticidal use means EPA registration status of the end-use formulation — distinct from the technical-grade chemical — governs domestic sale and use after entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Technical-grade trichlorfon (the active ingredient) is not itself a registered pesticide product, but importers intending to formulate or sell it as a pesticide must ensure the downstream product carries a valid EPA registration under FIFRA. CBP may coordinate with EPA on admissibility for pesticide-related shipments, so importers should have documentation of intended use ready at entry.
No. Whether the compound is described as trichlorfon (its ISO pesticide name) or metrifonate (its INN pharmaceutical name), the chemical identity is the same and classification at 293154 is determined by chemical structure, not by the trade name used. Importers should cite the CAS number (52-68-6) on entry documentation to avoid ambiguity.
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Subheading 17 of 17 in heading 2931
Subheading 293154 · $0 of $69.3M
ImportsExports
Imports
$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 December 2025. Source: U.S. Census Bureau.
Imports · December 2025
origin
customs district
None recorded for this period.
destination
None recorded for this period.
entry
None recorded for this period.
rate provision · imports
None recorded for this period.