Disilane, 1,1,2,2-tetrachloro-1,2-dimethyl-

CAS 4518-98-3

U.S. production volumes are classified 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.

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.

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

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

Vendor Pricing

$14.08/gAA BLOCKS

CountryUnited States

Pack$352.00 / 25 g

Purity98%

Vendors7 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

6 more vendors

Vendor	Country	$/g	Pack	Purity
A2B Chem LLC	United States	$32.88	25 g	98%
Aaron Chemicals LLC	Hong Kong	$43.20	5 g	98%
Angene Chemical	China → Hong Kong	$43.80	5 g	98%
Angene International Limited	United States	$52.72	25 g	98%
AstaTech (2 weeks)	United States	$64.60	10 g	98%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS4518-98-3

PubChem CID78276

DTXSIDDTXSID4027573

FormulaC2H6Cl4Si2

Mol. Weight228 g/mol

SMILESC[Si]([Si](C)(Cl)Cl)(Cl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID4027573Retrieved 2026-04-06
PubChem · compound 78276Retrieved 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

Disilane, 1,1,2,2-tetrachloro-1,2-dimethyl- (CAS 4518-98-3) https://chemicalindependence.com/chemical/4518-98-3/ EPA CompTox (DSSTox): DTXSID4027573. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4027573 PubChem: 78276. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/78276 EPA Chemical Data Reporting: 4518-98-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 4518-98-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting