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Merck

254371

Ethoxytrimethylsilane

98%

Synonym(s):

Trimethylethoxysilane

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About This Item

Linear Formula:
C2H5OSi(CH3)3
CAS Number:
Molecular Weight:
118.25
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
EC Number:
217-370-6
Beilstein/REAXYS Number:
1731950
MDL number:
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Product Name

Ethoxytrimethylsilane, 98%

InChI key

RSIHJDGMBDPTIM-UHFFFAOYSA-N

InChI

1S/C5H14OSi/c1-5-6-7(2,3)4/h5H2,1-4H3

SMILES string

CCO[Si](C)(C)C

assay

98%

form

liquid

refractive index

n20/D 1.374 (lit.)

bp

75-76 °C (lit.)

density

0.757 g/mL at 25 °C (lit.)

Quality Level

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Application

ETMS can be used to modify the silica nanoparticles to form a hydrophobic coating with ultra-high molecular weight polyethylene on the surface of the steel. It may be used to methylate silica nanoparticles that form silica nano-capsules for stabilized oil-in water emulsions.

General description

Ethoxytrimethylsilane (ETMS) is an alkoxysilane that is used as a capping agent, which can tune the hydrophobic properties for a variety of substrates by coupling with the surface hydroxyl groups.
Sodium acetylacetonate reacts with dichloro trimethylsiloxyaluminium to form ethoxytrimethylsilane.{70} Ethoxytrimethylsilane reacts with alkali ions to form Si-O-M (M: alkali metal) linkage, which was investigated in detail by 29Si NMR.1

pictograms

Flame

signalword

Danger

hcodes

Hazard Classifications

Flam. Liq. 2

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

-3.1 °F - closed cup

flash_point_c

-19.5 °C - closed cup

ppe

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


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Electron Moments and Structures of Organosilicon Compounds. III. The Oxygen-Silicon Bond1, 2.
Freiser H, et al.
Journal of the American Chemical Society, 75(12), 2824-2827 (1953)
Part I. Dichloro-and dibromotrimethylsiloxyaluminium: structure, and reaction with sodium acetylacetonate.
Ercolani CA, et al.
Journal of the Chemical Society, 603-605 (1966)
Surface chemistry and trimethylsilyl functionalization of Stober silica sols.
Suratwala TI, et al.
Journal of Non-Crystalline Solids, 316(2), 349-363 (2003)
Structural and photophysical properties of rare-earth complexes encapsulated into surface modified mesoporous silica nanoparticles.
Malba C, et al.
Dalton Transactions, 43(43), 16183-16196 (2014)
Regiospecific synthesis of α-lithiated alkoxysilanes.
Bates TF, et al.
Journal of Organometallic Chemistry, 595(1), 87-92 (2000)

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