HSChapter 38
U.S. imports of polyglycol esters of methylphosphonic acid (HS 382492) totaled $19K in April 2026, traded with 2 countries.
Polyglycol Esters of Methylphosphonic Acid imports of $19K in April 2026 ran 29% above the year-to-date monthly average of $15K.
Last updated: April 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.
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.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % |
|---|---|---|---|
| 3824920000 | POLYGLYCOL ESTERS OF METHYLPHOSPHONIC ACID | $19K | -- |
POLYGLYCOL ESTERS OF METHYLPHOSPHONIC ACID
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3824920000 | POLYGLYCOL ESTERS OF METHYLPHOSPHONIC ACID | $127K |
POLYGLYCOL ESTERS OF METHYLPHOSPHONIC ACID
26.1K kg
PRODUCTS AND RESIDUALS OF CHEMICAL INDUSTRY, NESOI
HS 382499
DIAGNOSTIC OR LABORATORY REAGENTS INCL KITS, NESOI
HS 382219
CHEM ELEM DOPED, USED IN ELECTRON, DISCS WAFERS ET
HS 381800
SUPPORTED CATALYSTS W PREC METAL/PREC MTL COMPND
HS 381512
SUPPORTED CATALYSTS, NESOI
HS 381519
ADDITIVE FOR LUB OIL CONT PETRO/BITUMINOUS MINOIL
HS 381121
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | -- | $65K | +$65K |
| Virginia | -- | $43K | +$43K |
| Connecticut | $19K | -- | -$19K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | -- | $80K | +$80K |
| PANAMA CITY, FL | -- | $43K | +$43K |
| PORTAL, ND | $19K | -- | -$19K |