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Ethyltriacetoxysilane

CAS 17689-77-9

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

Molecular structure of 17689-77-9
US productionCBI
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 Confidential · Imports Confidential

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
CN 39%ChinaDE 17%GermanyIT 9%ItalyIN 7%IndiaJP 7%Japan
EPA-registered manufacturers (1)
Dow Chemical
Domestic parents -- activity not disclosed (1)
Wacker Chemical Corporation - Headquarters
EPA-registered importers (2)
Ab Specialty Silicones
The Sherwin Williams

Why It Matters

Sectors
ElectronicsTransportationConstructionMetals & MiningPaints & CoatingsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 6 sectors as 3 functional roles.

  • •Sealant (barrier) in ConstructionProcessing—incorporation into formulation, mixture, or reaction product
  • •Sealant (barrier) in Transportation Equipment ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Sealant (barrier) in Miscellaneous ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Sealant (barrier) 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
  • •Adhesion/cohesion promoter in Paint and Coating Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.06/gAaron Chemicals LLC
CountryHong Kong
Pack$29.00 / 500 g
PurityNot recorded
Vendors8 available

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

7 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.07500 g—
A2B Chem LLCUnited States$0.29100 g96%
AA BLOCKSUnited States$0.35100 g96%
Combi-Blocks, Inc.United States$1.26500 g96%
AK Scientific, Inc.United States$2.7225 g95%
Angene International LimitedUnited States$5.6025 g95%
AngeneChina → Hong Kong$4266.6730 mg—

Chemical Identity

CAS17689-77-9
PubChem CID87244
DTXSIDDTXSID3027792
FormulaC8H14O6Si
Mol. Weight234.28 g/mol
SMILESCC[Si](OC(=O)C)(OC(=O)C)OC(=O)C

Data Sources

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Brief citations

Ethyltriacetoxysilane (CAS 17689-77-9) https://chemicalindependence.com/chemical/17689-77-9/ EPA CompTox (DSSTox): DTXSID3027792. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3027792 PubChem: 87244. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/87244 EPA Chemical Data Reporting: 17689-77-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 17689-77-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293190 for CAS 17689-77-9. Reporting year: 2024. https://usatrade.census.gov/