U.S. exports of Methylphosphonic Acid (HS 293144) totaled $114K in August 2026, exported to 1 country.
Last updated: August 2026 dataMethylphosphonic acid (MPA) is a key organophosphorus compound and a direct hydrolysis product of certain nerve agents, making it a closely monitored chemical under the Chemical Weapons Convention's Schedule 2 list. In legitimate commerce, it serves as an intermediate in the synthesis of flame retardants, herbicides, and specialty phosphonate chemicals. Germany is the leading — and apparently sole — recorded US supplier for this heading, classified under HTS line 2931440000. Importers must be prepared for rigorous end-use certification and potential BIS review.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Methylphosphonic acid is a Schedule 2 chemical under the Chemical Weapons Convention because it is a hydrolysis product and synthetic precursor associated with certain nerve agents. This status triggers enhanced end-use verification requirements and potential BIS review for all import transactions.
Legitimate applications include use as a synthetic intermediate for organophosphonate flame retardants, agricultural chemical synthesis, and specialty chemical research. Importers must clearly document the specific end use to satisfy customs and regulatory requirements.
Subheading 6 of 17 in heading 2931
Subheading 293144 · $114K of $109.8M
ImportsExports
Imports
—YoY · free account
Exports
$114KYoY · free account
Low of 1 reported month · imports
Low · free accountOver the twelve months to August 2026, the U.S. exported $707K of Methylphosphonic Acid.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · imports 1 of 12 months reported, exports 7 of 12 months reported. Source: U.S. Census Bureau.
Exports · August 2026
destination
Canada and Dominican Republic together take 100% of it.
customs district
origin
entry
rate provision · imports
None recorded for this period.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share |
|---|---|---|---|---|
| 2931440000 | Methylphosphonic Acid | — | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2931440000 | Methylphosphonic Acid | $114K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Trade Directory
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