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Diethoxydimethylsilane

ALDRICH/175595 - 97%

Synonym: Dimethyldiethoxysilane

CAS Number: 78-62-6
Empirical Formula (Hill Notation): C6H16O2Si
Molecular Weight: 148.28
EC Number: 201-127-6
MDL Number: MFCD00009068
Linear Formula: (CH3)2Si(OC2H5)2
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-175595-100ML 100 mL
 $58.70
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45-175595-500ML 500 mL
 $205.00
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assay 97%
bp 114 °C (lit.)
density 0.865 g/mL at 25 °C (lit.)
form liquid
InChI 1S/C6H16O2Si/c1-5-7-9(3,4)8-6-2/h5-6H2,1-4H3
InChI key YYLGKUPAFFKGRQ-UHFFFAOYSA-N
Quality Level 100 
refractive index n20/D 1.381 (lit.)
SMILES string CCO[Si](C)(C)OCC
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}
Application: 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.
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.
Packaging: 100, 500 mL in glass bottle
Purity 97%
bp 114 °C (lit.)
Density 0.865 g/mL at 25 °C (lit.)
Refractive Index n20/D 1.381 (lit.)
UNSPSC 12352103

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