253006

Methoxytrimethylsilane

99%

• Synonym(s): Methyl trimethylsilyl ether, Trimethylmethoxysilane
• Linear Formula: CH₃OSi(CH₃)₃
• CAS Number: 1825-61-2
• Molecular Weight: 104.22
• Beilstein/REAXYS Number: 1731490
• EC Number: 217-369-0
• MDL number: MFCD00008344
• UNSPSC Code: 12352103
• PubChem Substance ID: 24855087
• NACRES: NA.23

Properties

• assay: 99%
• form: liquid
• refractive index: n20/D 1.366 (lit.)
• bp: 57-58 °C (lit.)
• density: 0.756 g/mL at 25 °C (lit.)
• SMILES string: CO[Si](C)(C)C
• InChI: 1S/C4H12OSi/c1-5-6(2,3)4/h1-4H3
• InChI key: POPACFLNWGUDSR-UHFFFAOYSA-N

Description

General description

Methoxytrimethylsilane (MTMS) is a silylating agent, which is majorly used to provide a hydrophobic surface coating with a high water contact angle and low surface energy.

Application

Effect of chemical modification of diglycidyl bisphenol A based epoxy resin with methyltrimethoxy silane (MTMS) was studied. 1 It was used to quench lab ware with MTMS while handling HF/pyridine.{90}

Superhydrophobic recycled polyethylene terephthalate (rPET) aerogels can be fabricated by using rPET fibers and polyvinyl alcohol (PVA) and can be coated on MTMS. MTMS on diglycidyl bisphenol A resin (epoxy resin) also shows weathering resistance on exposure to UV by lowering the effect of color change by 45%.

Safety Information

• pictograms: GHS02,GHS07
• signalword: Danger
• hcodes: H225,H319
• pcodes: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Flam. Liq. 2
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: -4.0 °F - closed cup
• flash_point_c: -20 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves