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Sigma-Aldrich

Tetramethyl orthosilicate

deposition grade, ≥98%, ≥99.9% trace metals basis

Synonyme(s) :

Tetramethoxysilane

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About This Item

Formule linéaire :
Si(OCH3)4
Numéro CAS:
681-84-5
Poids moléculaire :
152.22
Numéro Beilstein :
1699658
Numéro CE :
211-656-4
Numéro MDL:
MFCD00008341
Code UNSPSC :
12352103
ID de substance PubChem :
24885480
Nomenclature NACRES :
NA.23

Qualité

deposition grade

Densité de vapeur

5.25 (vs air)

Pression de vapeur

13 hPa ( 20 °C)

Pureté

≥98%
≥99.9% trace metals basis

Forme

liquid

Indice de réfraction

n20/D 1.368 (lit.)

Point d'ébullition

121-122 °C (lit.)

Pf

−4 °C (lit.)

Densité

1.023 g/mL at 25 °C (lit.)

Chaîne SMILES 

CO[Si](OC)(OC)OC

InChI

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

Clé InChI

LFQCEHFDDXELDD-UHFFFAOYSA-N

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Application

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

Pictogrammes

FlameSkull and crossbonesCorrosion
GHS02,GHS06,GHS05

Mention d'avertissement

Danger

Mentions de danger

H226,H315,H318,H330

Classification des risques

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

Code de la classe de stockage

3 - Flammable liquids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

78.8 °F - closed cup

Point d'éclair (°C)

26 °C - closed cup

Équipement de protection individuelle

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

Certificats d'analyse (COA)

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Yun Tian et al.
Electrophoresis, 29(4), 960-970 (2008-01-24)
A novel calix[4] open-chain crown ether (p-tert-butylcalix[4]arene-1,3-bis(allyloxyethy) ether)-modified, organic-inorganic hybrid silica-based monolithic column possessing vinyl ligands for CEC is described. The monolithic silica matrix containing a vinyl functionality was synthesized by in situ cocondensation of tetramethoxysilane (TMOS) and vinyltrimethoxysilane (VTMS)
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.
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
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
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
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