Tetramethyl orthosilicate
CAS Number681-84-5
FormulaSi(OCH3)4
Mol. Weight152.22 g/mol
Tetramethyl orthosilicate
What is Tetramethyl orthosilicate?
Tetramethyl orthosilicate is a chemical compound with CAS number 681-84-5 and molecular formula Si(OCH3)4. It is used in various industrial and research applications.
Applications
Used in the sol-gel synthesis of chromium-doped silicates1 and in the formation of hexagonal mesoporous silica layers.2
Specifications
Linear Formula
Si(OCH3)4
Molecular Weight
152.22 g/mol
Grade
deposition grade
Assay/Purity
≥99%
Boiling Point
121-122 °C(lit.)
Density
1.023 g/mL at 25 °C(lit.)
Safety Information
GHS02
GHS05
GHS06Signal Word
Danger
Hazard Statements
H226-H315-H318-H330-H335
Precautionary Statements
P260-P280-P284-P305 + P351 + P338-P310
Required PPE
Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Melting Point
−4 °C(lit.)
EC Number
211-656-4
WGK Germany
3