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Phosphonic acid, monobutyl ester

CAS 16456-56-7

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

Molecular structure of 16456-56-7
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

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

CAS16456-56-7
PubChem CIDNot recorded
DTXSIDDTXSID60884909
FormulaC4H11O3P
Mol. Weight138.103 g/mol
SMILESCCCCOP(O)=O

Data Sources

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Brief citations

Phosphonic acid, monobutyl ester (CAS 16456-56-7) https://chemicalindependence.com/chemical/16456-56-7/ EPA TSCA Inventory: CAS 16456-56-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory