218472
Tetramethyl orthosilicate
98%
Synonym(s):
Tetramethoxysilane
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About This Item
Linear Formula:
Si(OCH3)4
CAS Number:
Molecular Weight:
152.22
Beilstein:
1699658
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23
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vapor density
5.25 (vs air)
vapor pressure
13 hPa ( 20 °C)
Assay
98%
form
liquid
refractive index
n20/D 1.368 (lit.)
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
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Application
Tetramethyl orthosilicate (TMOS) is popularly used in the sol-gel synthesis of silicates1 and chromium-doped silicates and in the formation of hexagonal mesoporous silica layers.
Used in the sol-gel synthesis of chromium-doped silicates and in the formation of hexagonal mesoporous silica layers.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 1 Inhalation - Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2
Storage Class Code
3 - Flammable liquids
WGK
WGK 1
Flash Point(F)
78.8 °F - closed cup
Flash Point(C)
26 °C - closed cup
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Zian Lin et al.
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Stephan Altmaier et al.
Journal of separation science, 31(14), 2551-2559 (2008-07-12)
Silica-based monolithic columns were prepared for HPLC with systematic variations of the tetramethoxysilane (TMOS) and polyethylene oxide (PEO) content as reactants in a sol-gel process accompanied by phase separation. The resulting monoliths showed differences in the macropore and silica skeleton
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The temperature effects during the sol-gel process and ageing of the silica-based monolith on the structure and separation efficiency of the capillary columns (100microm i.d., 150mm) for HPLC separations were studied. The tested columns were synthesized from a mixture of
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A simple capillary flow porometer (CFP) was assembled for through-pore structure characterization of monolithic capillary liquid chromatography columns in their original chromatographic forms. Determination of differential pressures and flow rates through dry and wet short capillary segments provided necessary information
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