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Phosphorochloridous acid, diethyl ester

CAS 589-57-1

Molecular structure of 589-57-1
US productionNot reported
Import value, 2024$208M
Top sourceChina 28%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 292090 · basket

These shares come from HS customs code 292090, which covers 98 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 28%ChinaKR 17%South KoreaIT 13%ItalyIN 10%IndiaDE 9%Germany

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS589-57-1
PubChem CIDNot recorded
DTXSIDDTXSID0060430
FormulaC4H10ClO2P
Mol. Weight156.55 g/mol
SMILESCCOP(Cl)OCC

Data Sources

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Brief citations

Phosphorochloridous acid, diethyl ester (CAS 589-57-1) https://chemicalindependence.com/chemical/589-57-1/ EPA TSCA Inventory: CAS 589-57-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 292090 for CAS 589-57-1. Reporting year: 2024. https://usatrade.census.gov/