2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[2-(6-sulfo-2-naphthalenyl)diazenyl]-, sodium salt, compd. with 2,2',2''-nitrilotris[ethanol] (1:?:?)

CAS 79770-29-9

Used in 2 industrial sectors tracked by the EPA.

US production112.7K lb

Import volumeCBI

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. Production reporting year: 2023.

Where It Comes From

EPA reports by year

2023: US production 112.7K lb · Imports Confidential
2019: US production 220.0K lb · Imports 23.0K lb

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

CAS79770-29-9

PubChem CIDNot recorded

DTXSIDDTXSID501013726

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID501013726Retrieved 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, 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[2-(6-sulfo-2-naphthalenyl)diazenyl]-, sodium salt, compd. with 2,2',2''-nitrilotris[ethanol] (1:?:?) (CAS 79770-29-9) https://chemicalindependence.com/chemical/79770-29-9/ EPA CompTox (DSSTox): DTXSID501013726. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID501013726 EPA Chemical Data Reporting: 79770-29-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 79770-29-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting