C.I. Pigment Brown 33

CAS 68186-88-9

U.S. production volumes are classified as confidential business information.

US productionCBI

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. US production volume is confidential. Production reporting year: 2023.

Where It Comes From

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

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.

The Shepherd Material Science

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Sicer Usa

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.

Vetriceramici Usa

Why It Matters

Sectors

ConstructionMetals & MiningPlastics & RubberTextilesPaints & CoatingsPaper & 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 7 sectors as 1 functional role.

•Pigment in Synthetic Dye and Pigment ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Pigment in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Pigment in OtherProcessing—incorporation into article
•Pigment in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing)Processing—incorporation into formulation, mixture, or reaction product
•Pigment in Printing Ink ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Pigment in Plastics Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Pigment in Custom Compounding of Purchased ResinsProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS68186-88-9

PubChem CIDNot recorded

DTXSIDDTXSID0097374

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID0097374Retrieved 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

C.I. Pigment Brown 33 (CAS 68186-88-9) https://chemicalindependence.com/chemical/68186-88-9/ EPA CompTox (DSSTox): DTXSID0097374. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0097374 EPA Chemical Data Reporting: 68186-88-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 68186-88-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting