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2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[2-[4-(acetylamino)phenyl]diazenyl]-4-hydroxy-, sodium salt (1:1)

CAS 6222-63-5

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

Molecular structure of 6222-63-5
1 Na⁺
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

CAS6222-63-5
PubChem CIDNot recorded
DTXSIDDTXSID8064143
FormulaC20H17N4NaO6S
Mol. Weight464.43 g/mol
SMILES[Na+].CC(=O)NC1=CC=C(C=C1)N=NC1=C(C=C2C=C(NC(C)=O)C=CC2=C1O)S([O-])(=O)=O

Data Sources

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Brief citations

2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[2-[4-(acetylamino)phenyl]diazenyl]-4-hydroxy-, sodium salt (1:1) (CAS 6222-63-5) https://chemicalindependence.com/chemical/6222-63-5/ EPA TSCA Inventory: CAS 6222-63-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory