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Harmonized System
Methylphosphonic dichloride is a halogenated organophosphorous intermediate classified under a single 10-digit line (2931510000) and is a recognized Chemical Weapons Convention Schedule 2 precursor, placing it under strict international monitoring and US import controls. China is the sole recorded US supplier, creating significant concentration risk for buyers who depend on this intermediate for downstream synthesis. Importers should confirm Commerce Department and State Department licensing requirements before arranging shipment, as CWC-related controls can affect admissibility regardless of declared end use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
As a CWC Schedule 2 chemical, methylphosphonic dichloride is subject to Commerce Department Export Administration Regulations (EAR) controls on import and export, and transactions may require end-use certification. Importers should consult a licensed customs broker and verify current BIS requirements before shipment.
Methylphosphonic dichloride serves as a key intermediate in the synthesis of flame retardants, specialty phosphonate esters, and certain agrochemical compounds. Its reactivity with alcohols and amines makes it a versatile building block, though its dual-use nature means buyers typically must document legitimate end-use applications.
Subheading 14 of 17 in heading 2931
Subheading 293151 · $0 of $69.3M
Supplier Network
Get discovered by U.S. importers searching for HS 293151 — Methylphosphonic Dichloride. 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 |
|---|---|---|---|---|
| 2931510000 | Methylphosphonic Dichloride | $0 | -- | -- |
ImportsExports
Imports
$0YoY · Pro
Exports
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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.
Imports · July 2026
origin
customs district
destination
entry
rate provision · imports
None recorded for this period.