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Chromate(3-), [3-(hydroxy-κO)-4-[2-[2-(hydroxy-κO)-1-naphthalenyl]diazenyl-κN1]-1-naphthalenesulfonato(3-)][6-(hydroxy-κO)-5-[2-[2-(hydroxy-κO)-1-naphthalenyl]diazenyl-κN1]-1-naphthalenesulfonato(3-)]-, sodium (1:3)

CAS 61916-42-5

EPA and Census publish no US supply data for this chemical.

Molecular structure of 61916-42-5
3 Na⁺ · 1 Cr³⁺
US productionNot reported
Top sourceNo public record

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Where It Comes From

EPA and Census publish no US supply data for this chemical.

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS61916-42-5
PubChem CIDNot recorded
DTXSIDDTXSID90904402
FormulaC40H22CrN4Na3O10S2
Mol. Weight903.72 g/mol
SMILES[Na+].[Na+].[Na+].[Cr+3].[O-]C1=CC=C2C=CC=CC2=C1\N=N\C1=C2C=CC=C(C2=CC=C1[O-])S([O-])(=O)=O.[O-]C1=CC=C2C=CC=CC2=C1\N=N\C1=C2C=CC=C(C2=CC=C1[O-])S([O-])(=O)=O

Data Sources

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Brief citations

Chromate(3-), [3-(hydroxy-κO)-4-[2-[2-(hydroxy-κO)-1-naphthalenyl]diazenyl-κN1]-1-naphthalenesulfonato(3-)][6-(hydroxy-κO)-5-[2-[2-(hydroxy-κO)-1-naphthalenyl]diazenyl-κN1]-1-naphthalenesulfonato(3-)]-, sodium (1:3) (CAS 61916-42-5) https://chemicalindependence.com/chemical/61916-42-5/ EPA TSCA Inventory: CAS 61916-42-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory