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Tetraethylammonium perfluorooctanesulfonate

CAS 56773-42-3

Ethanaminium, N,N,N-triethyl-, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-1-octanesulfonate (1:1)

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

Molecular structure of 56773-42-3
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 292330 · 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

CAS56773-42-3
PubChem CIDNot recorded
DTXSIDDTXSID5069128
FormulaC16H20F17NO3S
Mol. Weight629.37 g/mol
SMILESCC[N+](CC)(CC)CC.[O-]S(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F

Data Sources

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Brief citations

Tetraethylammonium perfluorooctanesulfonate (CAS 56773-42-3) https://chemicalindependence.com/chemical/56773-42-3/ EPA TSCA Inventory: CAS 56773-42-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory