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

CAS 52256-37-8

Companies reported imports and no US production of this chemical to EPA for 2023.

Molecular structure of 52256-37-8 — 1 Cr³⁺ · 1 H⁺

US productionZero

Import value, 2024$56M

Import volume45.5K lb

Import dependency100%

Top sourceIndia 70%

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Chromate(1-), bis[2,4-dihydro-4-[2-[2-(hydroxy-κO)-5-nitrophenyl]diazenyl-κN1]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-κO3]-, hydrogen (1:1) · US import value by year

2013: $63M · Peak 2022: $90M · 2024: $56M · 2025: $58M

Where It Comes From

Customs basis: HS 320412 · basket

EPA reports by year

2023: US production Zero · Imports 45.5K lb

These shares come from HS customs code 320412, which covers 106 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

IN 70%IndiaMY 7%MalaysiaCH 4%SwitzerlandCN 4%ChinaDE 3%Germany

Ireland
United Kingdom
Spain
South Korea
Denmark
Pakistan
Hong Kong
Czech Republic
Brazil
Turkey

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.

Target

Why It Matters

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

Chemical Identity

CAS52256-37-8

PubChem CIDNot recorded

DTXSIDDTXSID10904383

FormulaC32H23CrN10O8

Mol. Weight727.594 g/mol

SMILES[H+].[Cr+3].CC1=NN(C(=O)[C-]1\N=N\C1=CC(=CC=C1[O-])[N+]([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

EPA TSCA InventoryRetrieved 2026-04-29
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Chromate(1-), bis[2,4-dihydro-4-[2-[2-(hydroxy-κO)-5-nitrophenyl]diazenyl-κN1]-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-κO3]-, hydrogen (1:1) (CAS 52256-37-8) https://chemicalindependence.com/chemical/52256-37-8/ EPA TSCA Inventory: CAS 52256-37-8. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 52256-37-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 320412 for CAS 52256-37-8. Reporting year: 2024. https://usatrade.census.gov/