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Phosphine, diphenyl[2-(triethoxysilyl)ethyl]-

CAS 18586-39-5

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

Molecular structure of 18586-39-5
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

CAS18586-39-5
PubChem CIDNot recorded
DTXSIDDTXSID9066386
FormulaC20H29O3PSi
Mol. Weight376.508 g/mol
SMILESCCO[Si](CCP(C1=CC=CC=C1)C1=CC=CC=C1)(OCC)OCC

Data Sources

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Brief citations

Phosphine, diphenyl[2-(triethoxysilyl)ethyl]- (CAS 18586-39-5) https://chemicalindependence.com/chemical/18586-39-5/ EPA TSCA Inventory: CAS 18586-39-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory