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Diethyl ethylphosphonate

CAS 78-38-6

Phosphonic acid, P-ethyl-, diethyl ester

EPA and Census publish no US supply data for this chemical.

Molecular structure of 78-38-6
US productionNot reported
Top sourceNo public record

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

Where It Comes From

Customs basis: HS 293143 · exact

EPA and Census publish no US supply data for this chemical.

Why It Matters

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

Chemical Identity

CAS78-38-6
PubChem CIDNot recorded
DTXSIDDTXSID7025051
FormulaC6H15O3P
Mol. Weight166.157 g/mol
SMILESCCOP(=O)(CC)OCC

Data Sources

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Brief citations

Diethyl ethylphosphonate (CAS 78-38-6) https://chemicalindependence.com/chemical/78-38-6/ EPA TSCA Inventory: CAS 78-38-6. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory