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218472

Sigma-Aldrich

Tetramethyl orthosilicate

98%

Synonyma:

Tetramethoxysilane

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About This Item

Lineární vzorec:
Si(OCH3)4
Číslo CAS:
681-84-5
Molekulová hmotnost:
152.22
Beilstein/REAXYS Number:
1699658
EC Number:
211-656-4
MDL number:
MFCD00008341
UNSPSC Code:
12352103
PubChem Substance ID:
24853068
NACRES:
NA.23

vapor density

5.25 (vs air)

Quality Level

200

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.

signalword

Danger

Hazard Classifications

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

Storage Class

3 - Flammable liquids

wgk_germany

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

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Osvědčení o analýze (COA)

Lot/Batch Number
BCCJ3268
BCCF9753
BCCB0710
BCBZ5464
BCBW8878

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Shota Miyazaki et al.
Journal of chromatography. A, 1218(15), 1988-1994 (2010-12-24)
Chromatographic properties of a new type of monolithic silica rod columns were examined. Silica rod columns employed for the study were prepared from tetramethoxysilane, modified with octadecylsilyl moieties, and encased in a stainless-steel protective column with two polymer layers between
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
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Journal of the American Chemical Society, 134(26), 10998-11005 (2012-06-26)
Structure-switching, fluorescence-signaling DNA and RNA aptamers have been reported as highly versatile molecular recognition elements for biosensor development. While structure-switching DNA aptamers have been utilized for solid-phase sensing, equivalent RNA aptamers have yet to be successfully utilized in solid-phase sensors
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
Akhilesh Rai et al.
Langmuir : the ACS journal of surfaces and colloids, 26(6), 4152-4159 (2009-12-17)
We report an elegant and simple method to fabricate uniform silica films with controlled thickness, roughness, and hydrophilicity using nanogram quantities of silicatein, a protein involved in silica synthesis in sponges. The formation of uniform silica films was achieved by
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