Praseodymium oxide (Pr2O3)

CAS 12036-32-7

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

O₃Pr₂329.8 g/mol

no molecular structure to draw

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

Why It Matters

Sectors

Metals & Mining

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

•Corrosion inhibitor in Miscellaneous ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS12036-32-7

PubChem CID165911

DTXSIDDTXSID50884498

FormulaO3Pr2

Mol. Weight329.814 g/mol

SMILES[O-2].[O-2].[O-2].[Pr+3].[Pr+3]

Data Sources

EPA CompTox (DSSTox) · DTXSID50884498Retrieved 2026-04-06
PubChem · compound 165911Retrieved 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

Praseodymium oxide (Pr2O3) (CAS 12036-32-7) https://chemicalindependence.com/chemical/12036-32-7/ EPA CompTox (DSSTox): DTXSID50884498. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID50884498 PubChem: 165911. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/165911 EPA Chemical Data Reporting: 12036-32-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 12036-32-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting