Tetramethyl orthosilicate
原硅酸四甲酯
Also known as: TMOS, Methyl silicate, Tetramethoxysilane, Methyl orthosilicate, Silicon tetramethoxide, Tetramethyl silicate, Orthosilicic acid tetramethyl ester, Dynasil M, EINECS 211-656-4, MFCD00008341
- CAS No.
- 681-84-5
- Jingsj CID
- J-47492-6
- Molecular Formula
- C4H12O4Si
- Chinese Name
- 原硅酸四甲酯
- Molecular Weight
- 152.221 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −4 °C(lit.) |
|---|---|
| Boiling Point | 121.2±8.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 28.9±0.0 °C |
GHS Safety & Compliance
Flammable / Corrosion / Acute ToxicitySignal word: Danger
Frequently Asked Questions
What is the CAS number of Tetramethyl orthosilicate?
681-84-5
What are the molecular formula and molecular weight of Tetramethyl orthosilicate?
C4H12O4Si, molecular weight 152.221 g/mol
Is Tetramethyl orthosilicate hazardous?
Danger
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026