Tungsten

CAS 7440-33-7

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

W183.8 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 (5)

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

Cannon Muskegon

Global Tungsten &Amp; Powders

Kennametal

Linde

Sandvik

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.

Federal Cartridge Company Dba Hevi-Shot

EPA-registered importers (3)

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

Cronimet Specialty Metals Usa

Steel Dynamics

Tms International

Why It Matters

Sectors

EnergyElectronicsMetals & MiningPlastics & RubberConsumer ProductsPaints & Coatings

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 3 sectors as 3 functional roles.

•Alloys in Fabricated Metal Product Manufacturing (100%)Processing—incorporation into article
•Alloys in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Conductive agent in Electrical Equipment, Appliance, and Component Manufacturing (100%)Processing—incorporation into article
•Intermediate in Fabricated Metal Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Intermediate in Primary Metal Manufacturing (85%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS7440-33-7

PubChem CID23964

DTXSIDDTXSID8052481

FormulaW

Mol. Weight183.84 g/mol

SMILES[W]

Data Sources

EPA CompTox (DSSTox) · DTXSID8052481Retrieved 2026-04-06
PubChem · compound 23964Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
FDA National Drug Code directoryRetrieved 2026-04-07

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Brief citations

Tungsten (CAS 7440-33-7) https://chemicalindependence.com/chemical/7440-33-7/ EPA CompTox (DSSTox): DTXSID8052481. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8052481 PubChem: 23964. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23964 EPA Chemical Data Reporting: 7440-33-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting FDA National Drug Code directory: CAS 7440-33-7. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/