U.S. exports of polyglycol esters of methylphosphonic acid (HS 382492) totaled $272K in August 2026.
Polyglycol Esters of Methylphosphonic Acid imports of $27K in August 2026 ran 33% below the year-to-date monthly average of $41K.
Last updated: August 2026 dataPolyglycol esters of methylphosphonic acid are phosphorus-containing polymeric compounds used as flame retardants and reactive intermediates in specialty polymer and textile applications. The single tariff line 3824920000 covers this chemically specific product class, which differs from the cyclic phosphonate blends of heading 382491 in its polyglycol backbone structure. Canada leads US import supply, with Malaysia, Israel, India, and Germany also represented — a supplier mix that spans both large-scale chemical producers and niche specialty manufacturers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1 shipments/mo
The defining structural feature is the polyglycol ester linkage on the methylphosphonic acid backbone. This differentiates them from the cyclic dioxaphosphinane-based blends of heading 382491 and from simple alkyl methylphosphonates. The polyglycol chain imparts water solubility and compatibility with aqueous polymer systems, making these compounds useful in textile finishing and water-based coating formulations.
Methylphosphonic acid and certain of its derivatives appear on export control lists in multiple jurisdictions due to their structural relationship to chemical warfare agent precursors. While polyglycol esters are generally considered lower-risk commercial products, importers and exporters should verify that the specific compound does not appear on Commerce Control List (CCL) or ITAR schedules, and should maintain clear documentation of end-use and end-user.
HSChapter 38
ImportsExports
Imports
$27KYoY · free account
Exports
$272KYoY · free account
12-mo low · imports
YoY · free accountFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
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Subheading 9 of 17 in heading 3824
Subheading 382492 · $272K of $606.3M
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 | Duty Collected |
|---|---|---|---|---|---|
| 3824920000 | Polyglycol Esters of Methylphosphonic Acid | $27K | 17.50% | 100.00% | $5K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3824920000 | Polyglycol Esters of Methylphosphonic Acid | $272K |
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.
Exports · August 2026
destination
United Kingdom and Mexico together take 100% of it.
customs district
origin
entry
rate provision · imports
duty collected equals 17.50% of total import value.