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Chromate(1-), [2,4-dihydro-4-[2-[2-(hydroxy-κO)-5-nitrophenyl]diazenyl-κN1]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-κO3][2-[2-[4,5-dihydro-3-methyl-5-(oxo-κO)-1-phenyl-1H-pyrazol-4-yl]diazenyl-κN1]benzoato(2-)-κO]-, hydrogen (1:1)

CAS 52256-39-0

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

Molecular structure of 52256-39-0
1 Cr³⁺ · 1 H⁺
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

CAS52256-39-0
PubChem CIDNot recorded
DTXSIDDTXSID701014944
FormulaC33H24CrN9O7
Mol. Weight710.607 g/mol
SMILES[H+].[Cr+3].CC1=NN(C(=O)[C-]1\N=N\C1=CC=CC=C1C([O-])=O)C1=CC=CC=C1.CC1=NN(C(=O)[C-]1\N=N\C1=CC(=CC=C1[O-])[N+]([O-])=O)C1=CC=CC=C1

Data Sources

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Brief citations

Chromate(1-), [2,4-dihydro-4-[2-[2-(hydroxy-κO)-5-nitrophenyl]diazenyl-κN1]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-κO3][2-[2-[4,5-dihydro-3-methyl-5-(oxo-κO)-1-phenyl-1H-pyrazol-4-yl]diazenyl-κN1]benzoato(2-)-κO]-, hydrogen (1:1) (CAS 52256-39-0) https://chemicalindependence.com/chemical/52256-39-0/ EPA TSCA Inventory: CAS 52256-39-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory