Flag of the United StatesAmerican Chemical Independence

Chromate(2-), [3-(hydroxy-κO)-4-[2-[2-(hydroxy-κO)-1-naphthalenyl]diazenyl-κN1]-7-nitro-1-naphthalenesulfonato(3-)][1-[2-[2-(hydroxy-κO)-4-nitrophenyl]diazenyl-κN1]-2-naphthalenolato(2-)-κO]-, sodium (1:2)

CAS 70236-57-6

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

Molecular structure of 70236-57-6
2 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

CAS70236-57-6
PubChem CIDNot recorded
DTXSIDDTXSID201015111
FormulaC36H19CrN6Na2O11S
Mol. Weight841.61 g/mol
SMILES[Na+].[Na+].[Cr+3].[O-]C1=C(C=CC(=C1)[N+]([O-])=O)N=NC1=C([O-])C=CC2=C1C=CC=C2.[O-]C1=CC(=C2C=C(C=CC2=C1N=NC1=C([O-])C=CC2=C1C=CC=C2)[N+]([O-])=O)S([O-])(=O)=O

Data Sources

← Back to Dashboard

Brief citations

Chromate(2-), [3-(hydroxy-κO)-4-[2-[2-(hydroxy-κO)-1-naphthalenyl]diazenyl-κN1]-7-nitro-1-naphthalenesulfonato(3-)][1-[2-[2-(hydroxy-κO)-4-nitrophenyl]diazenyl-κN1]-2-naphthalenolato(2-)-κO]-, sodium (1:2) (CAS 70236-57-6) https://chemicalindependence.com/chemical/70236-57-6/ EPA TSCA Inventory: CAS 70236-57-6. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory