Dimethyldimethoxysilane Chemical Properties

Melting point:

-80°C

Boiling point:

81.4 °C(lit.)

Density 

0.88 g/mL at 25 °C(lit.)

vapor pressure 

7-12790Pa at 20-25℃

refractive index 

n20/D 1.369(lit.)

Flash point:

50 °F

storage temp. 

Store below +30°C.

form 

liquid

Specific Gravity

0.88

color 

Colorless to Almost colorless

Water Solubility 

decomposes

Sensitive 

Moisture Sensitive

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

BRN 

1733694

Dielectric constant

3.6600000000000001

InChIKey

JJQZDUKDJDQPMQ-UHFFFAOYSA-N

LogP

-0.74-2 at 20℃

CAS DataBase Reference

1112-39-6(CAS DataBase Reference)

NIST Chemistry Reference

Silane, dimethoxydimethyl-(1112-39-6)

EPA Substance Registry System

Silane, dimethoxydimethyl- (1112-39-6)

Safety Information

Hazard Codes 

F,Xi

Risk Statements 

11-36-36/37/38

Safety Statements 

16-26-33-36-37/39

RIDADR 

UN 1993 3/PG 2

WGK Germany 

3

RTECS 

VV3641666

F 

10-21

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

29319090

Toxicity

LC inhalation in rat: > 21350mg/m3/4

MSDS

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Dimethyldimethoxysilane Usage And Synthesis

Description

Dimethyldimethoxysilane is a monomeric alkylalkoxysilane. It hydrolyzes in contact with water, releasing methanol, to form highly reactive silanols, which further condense to form oligomeric and polymeric siloxanes.

Dimethyldimethoxysilane is mainly used in these aspects:

• In the synthesis of chemical intermediates.
• As an additive for the production of silicone resins.
• In the hydrophobization of surfaces, like glass, pigments etc.

Chemical Properties

Colorless clear liquid

Uses

It is employed as silylating agent for diols. Used as a monomer (?building block?) in the production of silicone polymers or silicone resins, as an intermediate (starting material) in the production of other organosilicon substances. Also employed in non-metal surface treatment to enhance the adhesion properties of surfaces. Used in sealants, in silicone polymer preparations (for the production of elastomers), in mould-making, in semiconductor manufacture, as a laboratory chemical in research and development activities.

Uses

Dimethoxydimethylsilane (DMDMS) can be used:

• To synthesize various macroporous silica aerogels.
• In the preparation of hollow silica nanoparticles loaded with phthalocyanine for near-infrared photodynamic and photothermal combination therapy.
• To synthesize dielectric silicone elastomer with high dielectric permittivity.

Flammability and Explosibility

Highly flammable

Dimethyldimethoxysilane(1112-39-6)Related Product Information

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