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Triethoxyoctylsilane

CAS 2943-75-1

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

Molecular structure of 2943-75-1
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 (4)
Kcc · KR South Korea
Chemmasters
Dow Chemical
Mom Holding
Domestic parents -- activity not disclosed (6)
Ab Specialty Silicones
Chemours
Milliken &
Mitsubishi Chemical America
Sika
Show all 6
Wacker Chemical Corporation - Headquarters
EPA-registered importers (6)
Bridgestone · JP Japan
Kcc · KR South Korea
Aceto Us
Brb North America
Bridgestone Americas
Show all 6
Wego Chemical Group

Why It Matters

Sectors
ElectronicsConstructionPlastics & RubberTextilesPaints & Coatings
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 7 sectors as 9 functional roles.

  • •Monomers in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Sealant (barrier) in Asphalt Paving, Roofing, and Coating Materials Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Waterproofing agent in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Waterproofing agent in Electrical Equipment, Appliance, and Component Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Synthetic Dye and Pigment Manufacturing (68%)Processing as a reactant
  • •Adhesion/cohesion promoter in Asphalt Paving, Roofing, and Coating Materials Manufacturing (100%)Processing as a reactant
  • •Surface modifier in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Binder in ConstructionProcessing—incorporation into formulation, mixture, or reaction product
  • •Impregnation agent in ConstructionProcessing—incorporation into article
  • •Impregnation agent in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Terminator/Blocker in Synthetic Rubber Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Surface modifier in Construction (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Waterproofing agent in Construction (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Sealant (barrier) in Construction (60%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.02/gAaron Chemicals LLC
CountryHong Kong
Pack$11.00 / 500 g
Purity97%
Vendors17 available

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

16 more vendors
VendorCountry$/gPackPurity
A2B Chem LLCUnited States$0.031 kg97%
Angene ChemicalChina → Hong Kong$0.03500 g97%
AA BLOCKSUnited States$0.031 kg97%
BLD Pharmatech Co., LimitedUnited States$0.041 kg97%
BLD Pharmatech Ltd.China$0.041 kg97%
Ambeed, Inc.United States$0.041 kg97%
BLD Pharmatech GmbHGermany$0.05500 g97%
Fluorochem EUGermany$0.07500 g97%
Fluorochem UKUnited Kingdom$0.10100 g97%
Combi-Blocks, Inc.United States$0.251 kg98%
Angene International LimitedUnited States$0.34500 g95%
MedKoo Biosciences, IncUnited States$0.48880 g98%
Sigma-Aldrich (Rush Stock)Germany$2.3250 g97%
Sigma-AldrichGermany$2.3250 g97%
MolnovaChina$37.001 g99%
AngeneChina → Hong Kong$4266.6730 mg97%

Chemical Identity

CAS2943-75-1
PubChem CID76262
DTXSIDDTXSID2029246
FormulaC14H32O3Si
Mol. Weight276.49 g/mol
SMILESCCCCCCCC[Si](OCC)(OCC)OCC

Data Sources

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Brief citations

Triethoxyoctylsilane (CAS 2943-75-1) https://chemicalindependence.com/chemical/2943-75-1/ EPA CompTox (DSSTox): DTXSID2029246. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2029246 PubChem: 76262. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/76262 EPA Chemical Data Reporting: 2943-75-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 2943-75-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293190 for CAS 2943-75-1. Reporting year: 2024. https://usatrade.census.gov/