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1-Naphthalenesulfonic acid, 5,5'-[(1-methylethylidene)bis(4,1-phenyleneoxysulfonyl-2,1-phenylene-2,1-diazenediyl)]bis[6-amino-, sodium salt (1:2)

CAS 70161-18-1

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

Molecular structure of 70161-18-1
2 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

CAS70161-18-1
PubChem CIDNot recorded
DTXSIDDTXSID60890045
FormulaC47H36N6Na2O12S4
Mol. Weight1051.05 g/mol
SMILES[Na+].[Na+].CC(C)(C1=CC=C(OS(=O)(=O)C2=CC=CC=C2N=NC2=C(N)C=CC3=C(C=CC=C23)S([O-])(=O)=O)C=C1)C1=CC=C(OS(=O)(=O)C2=CC=CC=C2N=NC2=C(N)C=CC3=C(C=CC=C23)S([O-])(=O)=O)C=C1

Data Sources

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Brief citations

1-Naphthalenesulfonic acid, 5,5'-[(1-methylethylidene)bis(4,1-phenyleneoxysulfonyl-2,1-phenylene-2,1-diazenediyl)]bis[6-amino-, sodium salt (1:2) (CAS 70161-18-1) https://chemicalindependence.com/chemical/70161-18-1/ EPA TSCA Inventory: CAS 70161-18-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory