440175

Trimethoxymethylsilane

95%

• Synonym(s): MTMS, 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
• UNSPSC Code: 12352103
• PubChem Substance ID: 24867574
• NACRES: NA.22

Properties

• Assay: 95%
• form: liquid
• impurities: 3% methyl alcohol
• 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

Description

Application

Trimethoxymethylsilane (MTMS) is one of the key precursor for the synthesis of:

• Monolithic silica columns with various skeleton sizes for capillary liquid chromatography.
• Ionogels, where an ionic liquid is confined within silica-derived networks.
• Monolithic silica aerogels via acid-base sol-gel polymerization.
• Hydrophobic, flexible, and ultralightweight silylated nanocellulose sponges for the selective removal of oil from water.

Safety Information

• Pictograms: GHS02
• Signal Word: Danger
• Hazard Statements: H225
• Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P243
• 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