7-Amino-4-hydroxy-3-(4-(4-(sulfophenyl)azo)phenylazo)-2-naphthalenesulfonic acid, disodium salt

CAS 6300-50-1

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

Molecular structure of 6300-50-1 — 2 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

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Kemira Water Solutions

Why It Matters

Sectors

TextilesPaper & Printing

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

Used in 2 sectors as 1 functional role.

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

Chemical Identity

CAS6300-50-1

PubChem CID80543

DTXSIDDTXSID50889509

FormulaC22H15N5Na2O7S2

Mol. Weight571.5 g/mol

SMILESC1=CC(=CC=C1N=NC2=CC=C(C=C2)S(=O)(=O)[O-])N=NC3=C(C=C4C=C(C=CC4=C3O)N)S(=O)(=O)[O-].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID50889509Retrieved 2026-04-06
PubChem · compound 80543Retrieved 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

7-Amino-4-hydroxy-3-(4-(4-(sulfophenyl)azo)phenylazo)-2-naphthalenesulfonic acid, disodium salt (CAS 6300-50-1) https://chemicalindependence.com/chemical/6300-50-1/ EPA CompTox (DSSTox): DTXSID50889509. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID50889509 PubChem: 80543. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/80543 EPA Chemical Data Reporting: 6300-50-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 6300-50-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting