175595
Diethoxydimethylsilane
97%
Synonym(s):
Dimethyldiethoxysilane
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About This Item
Linear Formula:
(CH3)2Si(OC2H5)2
CAS Number:
Molecular Weight:
148.28
Beilstein:
1736110
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23
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Quality Level
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
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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.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Flam. Liq. 2 - Repr. 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
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Organic/inorganic thin films deposited from diethoxydimethylsilane by plasma enhanced chemical vapor deposition
Roualdes S, et al.
Journal of Non-Crystalline Solids, 248(2-3), 235-246 (1999)
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Carbon dioxide laser synthesis of ultrafine silicon carbide powders from diethoxydimethylsilane.
Li, Ya-Li, et al.
Journal of the American Ceramic Society. American Ceramic Society, 77(6), 1662-1664 (1994)
Surface Modification of Sol-Gel Hybrid films using fluorinated silica nanoparticles
Purcar, V., Donescu, D., Spataru, I. C., Ghiurea, M., Caprarescu, S., Petcu, C., & Nistor
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