341436
Tetramethyl orthosilicate
≥99%
Synonym(s):
Tetramethoxysilane
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About This Item
Linear Formula:
Si(OCH3)4
CAS Number:
Molecular Weight:
152.22
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
EC Number:
211-656-4
Beilstein/REAXYS Number:
1699658
MDL number:
Quality Segment
vapor density
5.25 (vs air)
vapor pressure
13 hPa ( 20 °C)
assay
≥99%
form
liquid
refractive index
n
bp
121-122 °C (lit.)
mp
−4 °C (lit.)
density
1.023 g/mL at 25 °C (lit.)
SMILES string
CO[Si](OC)(OC)OC
InChI
1S/C4H12O4Si/c1-5-9(6-2,7-3)8-4/h1-4H3
InChI key
LFQCEHFDDXELDD-UHFFFAOYSA-N
General description
Tetramethyl orthosilicate is a colorless organosilicon compound consisting of four methoxy groups bonded to a silicon atom. On hydrolysis, it produces silicon dioxide and methanol. It has been widely used in catalysis, synthesis of nanomaterials, ceramics, zeolites, and coating materials.
Application
Tetramethyl orthosilicate can be used:
- As a precursor to synthesize organic-inorganic coating materials by sol-gel processing method.
- As an efficient reagent for direct amidation of aliphatic and aromatic carboxylic acids with amines and anilines.
- As a precursor to fabricate SiO2 nanocomposite films by chemical vapor deposition(CVD) method.
- As a selective catalyst ofC3-methylation of indole.
Used in the sol-gel synthesis of chromium-doped silicates and in the formation of hexagonal mesoporous silica layers.
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Danger
hcodes
Hazard Classifications
Acute Tox. 1 Inhalation - Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2
Storage Class
3 - Flammable liquids
flash_point_f
78.8 °F - closed cup
flash_point_c
26 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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