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Merck
CN

87682

Tetramethyl orthosilicate

purum, ≥98.0% (GC)

Synonym(s):

Tetramethoxysilane

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About This Item

Linear Formula:
Si(OCH3)4
CAS Number:
681-84-5
Molecular Weight:
152.22
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
329769595
EC Number:
211-656-4
Beilstein/REAXYS Number:
1699658
MDL number:
MFCD00008341

Key Documents

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InChI key

LFQCEHFDDXELDD-UHFFFAOYSA-N

InChI

1S/C4H12O4Si/c1-5-9(6-2,7-3)8-4/h1-4H3

SMILES string

CO[Si](OC)(OC)OC

vapor density

5.25 (vs air)

vapor pressure

13 hPa ( 20 °C)

grade

purum

assay

≥98.0% (GC)

form

liquid

Quality Level

200

bp

121-122 °C (lit.)

mp

−4 °C (lit.)

density

1.023 g/mL at 25 °C (lit.)

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Application

Used in the sol-gel synthesis of chromium-doped silicates and in the formation of hexagonal mesoporous silica layers.

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Danger

Hazard Classifications

Acute Tox. 1 Inhalation - Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2

Storage Class

3 - Flammable liquids

wgk

WGK 1

flash_point_f

78.8 °F - closed cup

flash_point_c

26 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
BCCJ3268
BCCF9753
BCCB0710
BCBZ5464
BCBW8878

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Zian Lin et al.
Chemical communications (Cambridge, England), 47(34), 9675-9677 (2011-07-30)
An inorganic-organic hybrid affinity monolithic column was synthesized by a novel "one-pot" approach. The resulting hybrid affinity monoliths have potential applications in specific recognition and enrichment of glycoproteins.
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
Yonghao Xiu et al.
Journal of colloid and interface science, 326(2), 465-470 (2008-07-29)
A method for the preparation of inorganic superhydrophobic silica coatings using sol-gel processing with tetramethoxysilane and isobutyltrimethoxysilane as precursors is described. Incorporation of isobutyltrimethoxysilane into silica layers resulted in the existence of hydrophobic isobutyl surface groups, thereby generating surface hydrophobicity.
Yan Fang et al.
Journal of chromatography. A, 1217(41), 6405-6412 (2010-09-03)
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
Josef Planeta et al.
Journal of chromatography. A, 1217(36), 5737-5740 (2010-08-03)
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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