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Benzoic acid, 3,3'-[iminobis[(1-hydroxy-3-sulfo-6,2-naphthalenediyl)-2,1-diazenediyl(2,5-dimethoxy-4,1-phenylene)-2,1-diazenediyl]]bis[6-hydroxy-, sodium salt (1:4)

CAS 6548-31-8

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

Molecular structure of 6548-31-8
4 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

CAS6548-31-8
PubChem CIDNot recorded
DTXSIDDTXSID90889563
FormulaC50H35N9Na4O18S2
Mol. Weight1205.95 g/mol
SMILES[Na+].[Na+].[Na+].[Na+].COC1=CC(N=NC2=C(C=C3C=C(NC4=CC5=CC(=C(N=NC6=C(OC)C=C(N=NC7=CC(C([O-])=O)=C(O)C=C7)C(OC)=C6)C(O)=C5C=C4)S([O-])(=O)=O)C=CC3=C2O)S([O-])(=O)=O)=C(OC)C=C1N=NC1=CC(C([O-])=O)=C(O)C=C1

Data Sources

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Brief citations

Benzoic acid, 3,3'-[iminobis[(1-hydroxy-3-sulfo-6,2-naphthalenediyl)-2,1-diazenediyl(2,5-dimethoxy-4,1-phenylene)-2,1-diazenediyl]]bis[6-hydroxy-, sodium salt (1:4) (CAS 6548-31-8) https://chemicalindependence.com/chemical/6548-31-8/ EPA TSCA Inventory: CAS 6548-31-8. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory