Tantalum-181

CAS 7440-25-7

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

Ta180.9 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 (4)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Cannon Muskegon

Global Advanced Metals Usa

Kymera International

Linde

EPA-registered importers (2)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Materion

Rtx

Why It Matters

Sectors

ElectronicsTransportationMetals & 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

Used in 4 sectors as 2 functional roles.

•Alloys in Fabricated Metal Product Manufacturing (27%)Processing—incorporation into article
•Alloys in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Alloys in Transportation Equipment Manufacturing (100%)Processing—incorporation into article
•Conductive agent in Electrical Equipment, Appliance, and Component Manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS7440-25-7

PubChem CID23956

DTXSIDDTXSID8064690

FormulaTa

Mol. Weight180.9479 g/mol

SMILES[Ta]

Data Sources

EPA CompTox (DSSTox) · DTXSID8064690Retrieved 2026-04-06
PubChem · compound 23956Retrieved 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

Tantalum-181 (CAS 7440-25-7) https://chemicalindependence.com/chemical/7440-25-7/ EPA CompTox (DSSTox): DTXSID8064690. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8064690 PubChem: 23956. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23956 EPA Chemical Data Reporting: 7440-25-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7440-25-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting