(3-Chloropropyl)(triethoxy)silane
CAS 5089-70-3
U.S. production volumes are classified as confidential business information.
At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction 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
- 2023
- US production Confidential · Imports 263.1K lb
- 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.
- 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
Why It Matters
Industrial Uses
Used in 3 sectors as 2 functional roles.
- •Adhesion/cohesion promoter in Rubber Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Adhesion/cohesion promoter in Synthetic Rubber ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Intermediate in All Other Basic Inorganic Chemical Manufacturing (100%)Processing—repackaging
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
10 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $0.03 | 500 g | 97% |
| Fluorochem UK | United Kingdom | $0.13 | 100 g | 97% |
| A2B Chem LLC | United States | $0.30 | 500 g | 97% |
| AK Scientific Specialized | United States | $0.30 | 100 g | 95% |
| Combi-Blocks, Inc. | United States | $0.30 | 500 g | 97% |
| AA BLOCKS | United States | $0.35 | 500 g | 97% |
| AK Scientific, Inc. | United States | $0.40 | 100 g | 98% |
| Ambeed, Inc. | United States | $0.50 | 100 g | 97% |
| Angene International Limited | United States | $2.84 | 25 g | 98% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 97% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID5029267Retrieved 2026-04-06
- PubChem · compound 78771Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
(3-Chloropropyl)(triethoxy)silane (CAS 5089-70-3) https://chemicalindependence.com/chemical/5089-70-3/ EPA CompTox (DSSTox): DTXSID5029267. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5029267 PubChem: 78771. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/78771 EPA Chemical Data Reporting: 5089-70-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 5089-70-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293190 for CAS 5089-70-3. Reporting year: 2024. https://usatrade.census.gov/