1,1,3,3-Tetramethyl-1-[2-(trimethoxysilyl)ethyl]disiloxane

CAS 137407-65-9

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.

Import volumeZero

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 Zero
2019: US production Confidential · Imports Zero

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—repackaging

Chemical Identity

CAS137407-65-9

PubChem CID18468820

DTXSIDDTXSID60567806

FormulaC9H25O4Si3

Mol. Weight281.55 g/mol

SMILESCO[Si](CC[Si](C)(C)O[Si](C)C)(OC)OC

Data Sources

EPA CompTox (DSSTox) · DTXSID60567806Retrieved 2026-04-06
PubChem · compound 18468820Retrieved 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

1,1,3,3-Tetramethyl-1-[2-(trimethoxysilyl)ethyl]disiloxane (CAS 137407-65-9) https://chemicalindependence.com/chemical/137407-65-9/ EPA CompTox (DSSTox): DTXSID60567806. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID60567806 PubChem: 18468820. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/18468820 EPA Chemical Data Reporting: 137407-65-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 137407-65-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting