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Tetraphenylphosphanium tetrakis(4-methylphenyl)borate(1-)

CAS 181259-35-8

Phosphonium, tetraphenyl-, tetrakis(4-methylphenyl)borate(1-) (1:1)

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

Molecular structure of 181259-35-8
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

CAS181259-35-8
PubChem CIDNot recorded
DTXSIDDTXSID40630289
FormulaC52H48BP
Mol. Weight714.74 g/mol
SMILESC1=CC=C(C=C1)[P+](C1=CC=CC=C1)(C1=CC=CC=C1)C1=CC=CC=C1.CC1=CC=C(C=C1)[B-](C1=CC=C(C)C=C1)(C1=CC=C(C)C=C1)C1=CC=C(C)C=C1

Data Sources

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Brief citations

Tetraphenylphosphanium tetrakis(4-methylphenyl)borate(1-) (CAS 181259-35-8) https://chemicalindependence.com/chemical/181259-35-8/ EPA TSCA Inventory: CAS 181259-35-8. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory