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2-Naphthalenecarboxylic acid, 3-hydroxy-4-[2-(2-sulfo-1-naphthalenyl)diazenyl]-, calcium salt (1:1)

CAS 73019-27-9

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

Molecular structure of 73019-27-9
1 Ca²⁺
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

CAS73019-27-9
PubChem CIDNot recorded
DTXSIDDTXSID00888365
FormulaC21H12CaN2O6S
Mol. Weight460.47 g/mol
SMILES[Ca++].OC1=C(N=NC2=C(C=CC3=C2C=CC=C3)S([O-])(=O)=O)C2=C(C=CC=C2)C=C1C([O-])=O

Data Sources

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Brief citations

2-Naphthalenecarboxylic acid, 3-hydroxy-4-[2-(2-sulfo-1-naphthalenyl)diazenyl]-, calcium salt (1:1) (CAS 73019-27-9) https://chemicalindependence.com/chemical/73019-27-9/ EPA TSCA Inventory: CAS 73019-27-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory