2-Naphthalenesulfonic acid, 3-[2-[4-[2-[4-(acetylamino)phenyl]diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-6-[2-(2,4-diamino-5-sulfophenyl)diazenyl]-4-hydroxy-, sodium salt (1:3)

CAS 76148-09-9

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

Molecular structure of 76148-09-9 — 9 Na⁺

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

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
2019: US production Confidential · Imports Confidential

Why It Matters

Sectors

Textiles

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

•Dye in Synthetic Dye and Pigment Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS76148-09-9

PubChem CID138395900

DTXSIDDTXSID40890381

FormulaC34H24N9Na9O11S3+6

Mol. Weight1037.7 g/mol

SMILESCC(=O)NC1=CC=C(C=C1)N=NC2=C3C=C(C=CC3=C(C=C2)N=NC4=C(C=C5C=CC(=CC5=C4O)N=NC6=CC(=C(C=C6N)N)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID40890381Retrieved 2026-04-06
PubChem · compound 138395900Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

2-Naphthalenesulfonic acid, 3-[2-[4-[2-[4-(acetylamino)phenyl]diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-6-[2-(2,4-diamino-5-sulfophenyl)diazenyl]-4-hydroxy-, sodium salt (1:3) (CAS 76148-09-9) https://chemicalindependence.com/chemical/76148-09-9/ EPA CompTox (DSSTox): DTXSID40890381. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID40890381 PubChem: 138395900. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/138395900 EPA Chemical Data Reporting: 76148-09-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 76148-09-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting