175595

Diethoxydimethylsilane

97%

• Synonym(s): Dimethyldiethoxysilane
• Linear Formula: (CH₃)₂Si(OC₂H₅)₂
• CAS Number: 78-62-6
• Molecular Weight: 148.28
• Beilstein: 1736110
• EC Number: 201-127-6
• MDL number: MFCD00009068
• UNSPSC Code: 12352103
• PubChem Substance ID: 24850513
• NACRES: NA.23

Properties

• Quality Level: 100
• Assay: 97%
• form: liquid
• refractive index: n20/D 1.381 (lit.)
• bp: 114 °C (lit.)
• density: 0.865 g/mL at 25 °C (lit.)
• SMILES string: CCO[Si](C)(C)OCC
• InChI: 1S/C6H16O2Si/c1-5-7-9(3,4)8-6-2/h5-6H2,1-4H3
• InChI key: YYLGKUPAFFKGRQ-UHFFFAOYSA-N

Description

General description

Diethoxydimethylsilane (DEDMS) is an organically modified silicate (ORMOSIL) with two methyl groups in each unit that facilitate the hydrophobic characteristics. It is mainly utilized to functionalize a variety of substrates.

Application

Diethoxydimethylsilane (DMDES) may be used to modify epoxy resin6 and the surfaces of pure silica and Pd/SiO2 hydrogen gas sensors. Surface modification results in enhanced gas sensing properties of the sensors. {43}-{44}Diethoxydimethylsilane may be used as a precursor for the synthesis of ultrafine SiC powder. {45} Studies report its use as a precursor for ORMOSIL (Organically modified SILicates) and thin a-SiOxCyHz films.{47}

The composite of DEDMS and triethoxymethylsilane can be used to synthesize a liquid precursor resin for the preparation of silicon oxycarbide (SiOC). It can form a sol-gel coating on polyamide-polyethylene (PA/PE), which can be used as an anti-oxidizing food packaging material. It can also be used as a precursor in the synthesis of polydimethylsiloxane, which forms an anti-corrosive coating composite with waterborne polyurethane.

Safety Information

• Pictograms: GHS02,GHS07
• Signal Word: Danger
• Hazard Statements: H225,H315,H319,H332
• Precautionary Statements: P210 - P233 - P240 - P303 + P361 + P353 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 2
• Flash Point(F): 42.8 °F - closed cup
• Flash Point(C): 6 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves