Silane, tetrachloro-

Drug ingredient

CAS 10026-04-7

This drug ingredient has classified U.S. production volumes. EPA withholds the number 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.

Import value, 2024$18M

Top sourceGermany 85%

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. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 281219 · basket

EPA reports by year

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

These shares come from HS customs code 281219, which covers 12 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

DE 85%GermanyKR 7%South KoreaJP 6%JapanIN 1%India

Italy

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.

Corning

Dow Chemical

Evonik

High-Purity Silicon America

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.

Wacker Polysilicon North America

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.

Rec Silicon

Why It Matters

Sectors

HealthElectronicsMetals & MiningCore Chemicals

Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

•Silicium Muriaticum

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.

•Intermediate in Primary Metal Manufacturing (100%)Processing as a reactant
•Semiconductor and photovoltaic agent in Electrical Equipment, Appliance, and Component ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Intermediate in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
•Hardener in All Other Basic Inorganic Chemical Manufacturing (85%)Processing as a reactant

Chemical Identity

CAS10026-04-7

PubChem CID24816

DTXSIDDTXSID0029711

FormulaCl4Si

Mol. Weight169.9 g/mol

SMILES[Si](Cl)(Cl)(Cl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID0029711Retrieved 2026-04-06
PubChem · compound 24816Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Silane, tetrachloro- (CAS 10026-04-7) https://chemicalindependence.com/chemical/10026-04-7/ EPA CompTox (DSSTox): DTXSID0029711. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0029711 PubChem: 24816. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24816 EPA Chemical Data Reporting: 10026-04-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 10026-04-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 281219 for CAS 10026-04-7. Reporting year: 2024. https://usatrade.census.gov/