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Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[2-(4-hydroxyphenyl)diazenyl]-, potassium salt (1:2)

CAS 75508-33-7

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

Molecular structure of 75508-33-7
2 K⁺
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

CAS75508-33-7
PubChem CIDNot recorded
DTXSIDDTXSID70890359
FormulaC26H18K2N4O8S2
Mol. Weight656.77 g/mol
SMILES[K+].[K+].OC1=CC=C(C=C1)N=NC1=CC=C(C=CC2=CC=C(C=C2S([O-])(=O)=O)N=NC2=CC=C(O)C=C2)C(=C1)S([O-])(=O)=O

Data Sources

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Brief citations

Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[2-(4-hydroxyphenyl)diazenyl]-, potassium salt (1:2) (CAS 75508-33-7) https://chemicalindependence.com/chemical/75508-33-7/ EPA TSCA Inventory: CAS 75508-33-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory