Tetraphenoxysilane
CAS 1174-72-7
Silicic acid (H4SiO4), tetraphenyl ester
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
$14.71/gAaron Chemicals LLC
CountryHong Kong
Pack$1471.00 / 100 g
PurityNot recorded
Vendors8 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
7 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 | $14.79 | 100 g | — |
| A2B Chem LLC | United States | $34.00 | 5 g | 95% |
| AA BLOCKS | United States | $36.20 | 5 g | 95% |
| AstaTech, Inc | United States | $136.00 | 5 g | 95% |
| Combi-Blocks, Inc. | United States | $138.00 | 5 g | 95% |
| Angene International Limited | United States | $396.00 | 1 g | 95% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | — |
Chemical Identity
CAS1174-72-7
PubChem CIDNot recorded
DTXSIDDTXSID0026129
FormulaC24H20O4Si
Mol. Weight400.505 g/mol
SMILESO(C1=CC=CC=C1)[Si](OC1=CC=CC=C1)(OC1=CC=CC=C1)OC1=CC=CC=C1
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
Tetraphenoxysilane (CAS 1174-72-7) https://chemicalindependence.com/chemical/1174-72-7/ EPA TSCA Inventory: CAS 1174-72-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory