Copper silicide (Cu5Si)

CAS 12159-07-8

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

Cu₅Si345.8 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 importers (1)

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

Dow Chemical

Why It Matters

Sectors

Core Chemicals

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

•Catalyst in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS12159-07-8

PubChem CID6336988

DTXSIDDTXSID101014289

FormulaCu5Si

Mol. Weight345.81 g/mol

SMILES[Si].[Cu].[Cu].[Cu].[Cu].[Cu]

Data Sources

EPA CompTox (DSSTox) · DTXSID101014289Retrieved 2026-04-06
PubChem · compound 6336988Retrieved 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

Copper silicide (Cu5Si) (CAS 12159-07-8) https://chemicalindependence.com/chemical/12159-07-8/ EPA CompTox (DSSTox): DTXSID101014289. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID101014289 PubChem: 6336988. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6336988 EPA Chemical Data Reporting: 12159-07-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 12159-07-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting