1,3'-Bipyridinium, 5'-[2-(3-aminophenyl)diazenyl]-1'-[3-(dimethylamino)propyl]-1',2'-dihydro-6'-hydroxy-4'-methyl-2'-oxo-, chloride, hydrochloride (1:1:1), diazotized, coupled with diazotized 5'-[2-(4-aminophenyl)diazenyl]-1'-[3-(dimethylamino)propyl]-1',2'-dihydro-6'-hydroxy-4'-methyl-2'-oxo-1,3'-bipyridinium chloride hydrochloride (1:1:1) and resorcinol

CAS 1345987-44-1

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 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

EPA-registered manufacturers (2)

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

Archroma Management Gmbh · CH Switzerland

Archroma U.S

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.

Venator Chemicals

Why It Matters

Sectors

ConstructionPaper & 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 Wood Product Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
•Dye in Paper Manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS1345987-44-1

PubChem CIDNot recorded

DTXSIDDTXSID801343370

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA TSCA InventoryRetrieved 2026-04-29
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

1,3'-Bipyridinium, 5'-[2-(3-aminophenyl)diazenyl]-1'-[3-(dimethylamino)propyl]-1',2'-dihydro-6'-hydroxy-4'-methyl-2'-oxo-, chloride, hydrochloride (1:1:1), diazotized, coupled with diazotized 5'-[2-(4-aminophenyl)diazenyl]-1'-[3-(dimethylamino)propyl]-1',2'-dihydro-6'-hydroxy-4'-methyl-2'-oxo-1,3'-bipyridinium chloride hydrochloride (1:1:1) and resorcinol (CAS 1345987-44-1) https://chemicalindependence.com/chemical/1345987-44-1/ EPA TSCA Inventory: CAS 1345987-44-1. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 1345987-44-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1345987-44-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting