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Benzoic acid, 2-[2-[[2-(2-hydroxy-5-sulfophenyl)diazenyl]phenylmethylene]hydrazinyl]-

CAS 135-52-4

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

Molecular structure of 135-52-4
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

CAS135-52-4
PubChem CIDNot recorded
DTXSIDDTXSID60861795
FormulaC20H16N4O6S
Mol. Weight440.43 g/mol
SMILESOC(=O)C1=CC=CC=C1NN=C(N=NC1=CC(=CC=C1O)S(O)(=O)=O)C1=CC=CC=C1

Data Sources

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Brief citations

Benzoic acid, 2-[2-[[2-(2-hydroxy-5-sulfophenyl)diazenyl]phenylmethylene]hydrazinyl]- (CAS 135-52-4) https://chemicalindependence.com/chemical/135-52-4/ EPA TSCA Inventory: CAS 135-52-4. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory