beta-(3,4-Epoxycyclohexyl)ethyltrimethoxysilane

CAS 3388-04-3

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.

Import value, 2024$537M

Top sourceChina 39%

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 293190 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production 203.2K lb · Imports 28.0K lb

These shares come from HS customs code 293190, which covers 378 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).

CN 39%ChinaDE 17%GermanyIT 9%ItalyIN 7%IndiaJP 7%Japan

Ireland
Netherlands
Switzerland
Monaco
Ukraine
Spain
Mexico
Poland
Indonesia
Armenia
Israel
Sweden
Australia
Czech Republic
Hungary
Brunei
Hong Kong
Brazil
Thailand
Argentina
Finland
Austria
Latvia

EPA-registered manufacturers (2)

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

Kcc · KR South Korea

Mom Holding

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.

Shin Etsu Silicones Of America

Why It Matters

Sectors

Plastics & RubberPaints & CoatingsCore 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

Used in 3 sectors as 3 functional roles.

•Paint additives and coating additives not described by other categories in Paint and Coating Manufacturing (20%)Processing as a reactant
•Plating agents and surface treating agents in Plastics Product Manufacturing (50%)Processing as a reactant
•Binder in Synthetic Rubber Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.06/gAaron Chemicals LLC

CountryHong Kong

Pack$32.00 / 500 g

Purity97%

Vendors11 available

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

10 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.07	500 g	97%
Fluorochem EU	Germany	$0.17	100 g	98%
AA BLOCKS	United States	$0.17	100 g	97%
A2B Chem LLC	United States	$0.30	500 g	98%
Combi-Blocks, Inc.	United States	$0.30	500 g	98%
AK Scientific Specialized	United States	$0.55	500 g	95%
AK Scientific, Inc.	United States	$0.65	500 g	98%
Angene International Limited	United States	$1.07	500 g	98%
Interbioscreen	Hong Kong	$41.00	10 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	97%

Chemical Identity

CAS3388-04-3

PubChem CID18819

DTXSIDDTXSID1043910

FormulaC11H22O4Si

Mol. Weight246.37 g/mol

SMILESCO[Si](CCC1CCC2C(C1)O2)(OC)OC

Data Sources

EPA CompTox (DSSTox) · DTXSID1043910Retrieved 2026-04-06
PubChem · compound 18819Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

beta-(3,4-Epoxycyclohexyl)ethyltrimethoxysilane (CAS 3388-04-3) https://chemicalindependence.com/chemical/3388-04-3/ EPA CompTox (DSSTox): DTXSID1043910. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1043910 PubChem: 18819. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/18819 EPA Chemical Data Reporting: 3388-04-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3388-04-3. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293190 for CAS 3388-04-3. Reporting year: 2024. https://usatrade.census.gov/