Difluorodiphenylsilane
CAS 312-40-3
Benzene, 1,1'-(difluorosilylene)bis-
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
$2.16/gAstaTech (2 weeks)
CountryUnited States
Pack$54.00 / 25 g
Purity95%
Vendors11 available
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 International Limited | United States | $4.08 | 100 g | 98% |
| Combi-Blocks, Inc. | United States | $9.00 | 25 g | 97% |
| A2B Chem LLC | United States | $9.40 | 5 g | 97% |
| AA BLOCKS | United States | $10.60 | 5 g | 97% |
| Aaron Chemicals LLC | Hong Kong | $11.32 | 25 g | 97% |
| Angene Chemical | China → Hong Kong | $11.44 | 25 g | 97% |
| Fluorochem EU | Germany | $12.54 | 25 g | 97% |
| Fluorochem UK | United Kingdom | $12.76 | 25 g | 97% |
| Ambeed, Inc. | United States | $13.20 | 5 g | 97% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 97% |
Chemical Identity
CAS312-40-3
PubChem CIDNot recorded
DTXSIDDTXSID2059801
FormulaC12H10F2Si
Mol. Weight220.294 g/mol
SMILESF[Si](F)(C1=CC=CC=C1)C1=CC=CC=C1
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
Difluorodiphenylsilane (CAS 312-40-3) https://chemicalindependence.com/chemical/312-40-3/ EPA TSCA Inventory: CAS 312-40-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory