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Sigma-Aldrich

Trimethoxymethylsilane

98%

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Synonym(s):
Methyltrimethoxysilane
Linear Formula:
CH3Si(OCH3)3
CAS Number:
1185-55-3
Molecular Weight:
136.22
Beilstein:
1736151
EC Number:
214-685-0
MDL number:
MFCD00008342
PubChem Substance ID:
24854790

Quality Level

200

Assay

98%

form

liquid

refractive index

n20/D 1.371 (lit.)

bp

102-104 °C (lit.)

density

0.955 g/mL at 25 °C (lit.)

SMILES string

CO[Si](C)(OC)OC

InChI

1S/C4H12O3Si/c1-5-8(4,6-2)7-3/h1-4H3

InChI key

BFXIKLCIZHOAAZ-UHFFFAOYSA-N

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General description

Trimethoxymethylsilane (MTM) is an organosilicon compound widely used as a precursor for the preparation of silica-based materials, which finds the applications in various fields. Particularly in molecular assembly, linking nano building blocks, and selective synthesis oligosiloxane compounds. It can also be utilized as a crosslinker in the synthesis of polysiloxane polymers.

Application

Trimethoxymethylsilane can be used:
  • As a silica source for synthesizing polyethyleneimine-silica (PEI-silica) organic-inorganic hybrid particles.
  • To transform hydrophilic ceramic surfaces to hydrophobic by modifying the -OH groups.
  • To modify silica aerogels by inducing hydrophobicity and enhancing mechanical properties without affecting transparency.

Pictograms

Flame
GHS02

Signal Word

Danger

Hazard Statements

H225

Hazard Classifications

Flam. Liq. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

48.2 °F

Flash Point(C)

9 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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The formation of polyethyleneimine?trimethoxymethylsilane organic?inorganic hybrid particles.
Neville F, et al.
Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 431, 42-50 (2013)
Utilization of alkoxysilyl groups for the creation of structurally controlled siloxane-based nanomaterials
Kuroda K, et al.
Chemistry of Materials, 26(1), 211-220 (2014)
Organo-modified silica aerogels and implications for material hydrophobicity and mechanical properties.
Martin L, et al.
Journal of Materials Chemistry, 18(2), 207-213 (2008)
Casseday P Richers et al.
Inorganic chemistry, 55(12), 5744-5746 (2016-06-04)
The commercially practiced conversion of trimethoxymethylsilane (MTM) to [OSi(OMe)Me)]n polymers and resins is assumed to proceed via the silanol (MeO)2MeSiOH. Access to this crucial silanol is gained via the synthesis of (MeO)2MeSiONa, the first methoxysilanoate to be crystallographically characterized. Mild
Investigation of Silane Modified Ceramic Surface of Porous Mullite Ceramics.
Markovska I, et al.
World Academy of Science, Engineering and Technology, 79(7), 272-276 (2013)
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