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78-62-6

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Identification

Name
Diethoxydimethylsilane
CAS
78-62-6
Synonyms
DIETHOXYDIMETHYLSILANE
Dimethyldiethoxylsilane
DIMETHYLDIETHOXYSILANE
Dimethyl diethoxy silicane
CD5600
diethoxydimethyl-silan
Dimethyl-diethoxysilan
dimethylsilicondiethoxide
EXP-49
kbe22
dirthoxydimethylsilane
Diethoxydimethylsilane,97%
Dimethyldiethoxysilane,97%
Silane, diethoxydimethyl-
DIETHOXYDIMETHYLSILICANE
EINECS(EC#)
201-127-6
Molecular Formula
C6H16O2Si
MDL Number
MFCD00009068
Molecular Weight
148.28
MOL File
78-62-6.mol

Chemical Properties

Appearance
Colorless clear liquid
mp 
-97°C
bp 
114 °C(lit.)

density 
0.865 g/mL at 25 °C(lit.)

refractive index 
n20/D 1.381(lit.)

Fp 
53 °F

storage temp. 
Flammables area
color 
≤25(APHA)

Water Solubility 
may decompose
Sensitive 
Moisture Sensitive
BRN 
1736110
CAS DataBase Reference
78-62-6(CAS DataBase Reference)
NIST Chemistry Reference
Silane, diethoxydimethyl-(78-62-6)
EPA Substance Registry System
78-62-6(EPA Substance)

Safety Data

Hazard Codes 
F,Xi
Risk Statements 
R11:Highly Flammable.
R36/38:Irritating to eyes and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S16:Keep away from sources of ignition-No smoking .
RIDADR 
UN 1993 3/PG 2

WGK Germany 
2

RTECS 
VV3590000

TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29319090
Safety Profile
Mildly toxic by inhalation and ingestion. A skin and eye irritant. A dangerous fire hazard when exposed to heat, flame, or oxidizers. When heated to decomposition it emits acrid smoke and irritating fumes.

Hazard Information

General Description
A colorless liquid. Flash point 75°F. Less dense than water and insoluble in water. Vapors heavier than air.
Reactivity Profile
These substances undergo chemical reactions only under relatively severe circumstances or in the presence of an effective catalyst that promotes reaction.. They are resistant to ignition, although they may become flammable at very high temperatures. They will be resistant to oxidation/reduction, except in the most severe conditions. These materials may be nontoxic.
Air & Water Reactions
Highly flammable. Insoluble in water.
Health Hazard
Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control may cause pollution.
Fire Hazard
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Material Safety Data Sheet(MSDS)

Questions and Answers (Q&A)

Uses
  1. Diethoxydimethylsilane 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.
  2. It may be used as a precursor for the synthesis of ultrafine SiC powder.
  3. Diethoxydimethylsilane is an intermediate silane useful for blocking hydroxyl and amino groups in organic synthesis reactions. This silylating step allows subsequent reactions to be carried out which would be adversely affected by the presence of active hydrogen in the hydroxyl or amine groups. Following the reaction step, hydroxyl or amine groups blocked with diethoxydimethylsilane may be recovered by a hydrolysis procedure.
  4. It is also used for preparing hydrophobic and release materials as well as enhancing flow of powders.
  5. Studies report its use as a precursor for ORMOSIL (Organically modified SILicates) and thin a-SiOxCyHz films.

Spectrum Detail

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