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2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2)

CAS 3626-36-6

U.S. production volumes are classified as confidential business information.

Molecular structure of 3626-36-6
2 Na⁺
US productionCBI
Top sourceNo public record

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023.

Where It Comes From

EPA reports by year
2023
US production Confidential · Imports Confidential

Why It Matters

Sectors
Paper & Printing
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

  • •Dye in Paper Manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS3626-36-6
PubChem CIDNot recorded
DTXSIDDTXSID30881400
FormulaC33H22N6Na2O9S2
Mol. Weight756.67 g/mol
SMILES[Na+].[Na+].OC1=C(N=NC2=CC=CC=C2)C(=CC2=C1C=CC(NC(=O)NC1=CC3=C(C=C1)C(O)=C(N=NC1=CC=CC=C1)C(=C3)S([O-])(=O)=O)=C2)S([O-])(=O)=O

Data Sources

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Brief citations

2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2) (CAS 3626-36-6) https://chemicalindependence.com/chemical/3626-36-6/ EPA TSCA Inventory: CAS 3626-36-6. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 3626-36-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3626-36-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting