Tetraethyl orthosilicate
正硅酸乙酯
Also known as: TEOS, Tetraethoxysilane, Ethyl silicate, Ethyl orthosilicate, Silicon tetraethoxide, Orthosilicic acid tetraethyl ester, Silane, tetraethoxy-, Tetraethyl silicate
- CAS No.
- 78-10-4
- Jingsj CID
- J-1354547-9
- Molecular Formula
- C8H20O4Si
- Chinese Name
- 正硅酸乙酯
- Molecular Weight
- 208.327 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
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Request a quotePhysicochemical Properties
| Melting Point | -77 °C |
|---|---|
| Boiling Point | 165.5±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 46.7±0.0 °C |
GHS Safety & Compliance
Flammable / IrritantSignal word: Warning
Frequently Asked Questions
What is the CAS number of Tetraethyl orthosilicate?
78-10-4
What are the molecular formula and molecular weight of Tetraethyl orthosilicate?
C8H20O4Si, molecular weight 208.327 g/mol
Is Tetraethyl orthosilicate hazardous?
Warning
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026