5-[2-[2,4(2,6 or 3,5)-Dihydroxy[2-(2-hydroxy-5-nitro-3-sulfophenyl)diazenyl]phenyl]diazenyl]-4-hydroxy-3-[2-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonic acid sodium salt (1:3)

CAS 2744323-33-7

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

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 2019 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: 2019.

Where It Comes From

EPA reports by year

2019: US production Confidential · Imports Confidential

EPA-registered importers (1)

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

Tfl Usa/Canada

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 Textiles, apparel, and leather manufacturing (80%)Processing—incorporation into article

Chemical Identity

CAS2744323-33-7

PubChem CIDNot recorded

DTXSIDDTXSID601343562

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID601343562Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04

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Brief citations

5-[2-[2,4(2,6 or 3,5)-Dihydroxy[2-(2-hydroxy-5-nitro-3-sulfophenyl)diazenyl]phenyl]diazenyl]-4-hydroxy-3-[2-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonic acid sodium salt (1:3) (CAS 2744323-33-7) https://chemicalindependence.com/chemical/2744323-33-7/ EPA CompTox (DSSTox): DTXSID601343562. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID601343562 EPA Chemical Data Reporting: 2744323-33-7. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 2744323-33-7. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting