Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3)
CAS 4325-85-3
EPA and Census publish no US supply data for this chemical.
US productionNot reported
Top sourceNo public record
This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.
Why supply is unknownWhere It Comes From
EPA and Census publish no US supply data for this chemical.
Why It Matters
No EPA sector or FDA product records name a use for this chemical.
Vendor Pricing
$0.26/gAaron Chemicals LLC
CountryHong Kong
Pack$129.00 / 500 g
Purity97%
Vendors12 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
11 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 | $0.28 | 500 g | 97% |
| A2B Chem LLC | United States | $0.44 | 500 g | 97% |
| AA BLOCKS | United States | $0.57 | 500 g | 97% |
| Fluorochem UK | United Kingdom | $0.74 | 100 g | 95% |
| Manchester Organics | United Kingdom | $0.87 | 250 g | — |
| Fluorochem EU | Germany | $1.11 | 25 g | 95% |
| MedChemExpress MCE | Sweden | $1.16 | 100 g | — |
| Sigma-Aldrich (Rush Stock) | Germany | $4.30 | 100 g | 99% |
| Sigma-Aldrich | Germany | $4.30 | 100 g | 99% |
| Angene International Limited | United States | $4.83 | 100 g | 95% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 97% |
Chemical Identity
CAS4325-85-3
PubChem CIDNot recorded
DTXSIDDTXSID3063413
FormulaC9H27BO3Si3
Mol. Weight278.38 g/mol
SMILESC[Si](C)(C)OB(O[Si](C)(C)C)O[Si](C)(C)C
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3) (CAS 4325-85-3) https://chemicalindependence.com/chemical/4325-85-3/ EPA TSCA Inventory: CAS 4325-85-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory