Diacetoxydimethylsilane Chemical Properties

Melting point:

-12.5 °C (lit.)

Boiling point:

163 °C (lit.)

Density 

1.054 g/mL at 25 °C (lit.)

refractive index 

n20/D 1.403(lit.)

Flash point:

153 °F

form 

liquid

Specific Gravity

1.054

color 

Colorless to Light yellow to Light red

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

BRN 

1769843

CAS DataBase Reference

2182-66-3(CAS DataBase Reference)

NIST Chemistry Reference

Silanediol, dimethyl-, diacetate(2182-66-3)

EPA Substance Registry System

Silanediol, dimethyl-, diacetate (2182-66-3)

Safety Information

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-28-36/37/39-45

RIDADR 

UN 3265 8/PG 3

WGK Germany 

3

F 

10-21

TSCA 

Yes

HazardClass 

3.2

PackingGroup 

III

HS Code 

29319090

MSDS

• Language:English Provider:Diacetoxydimethylsilane
• Language:English Provider:SigmaAldrich

Diacetoxydimethylsilane Usage And Synthesis

Features

Dimethyldiacetoxysilane is a clear to yellowish liquid with acrid odor of acetic acid (vinegar). It hydrolyzes in the presence of moisture (acetic acid is released) to form silanols, which can react with themselves to pro-duce siloxanes or bind to inorganic substrates.
Acetoxy silanes are more reactive than alkoxysilanes. Acetoxy silanes are frequently used as one-component mixtures to make RTV-1 silicone sealants. These mixtures have an excess of multi-functional acetoxy silane added to silanol-terminated PDMS, which results in a PDMS chain with acetoxy groups at the ends. When this compound is exposed to moisture some acetoxy groups are hydrolyzed and self-condense or react with other acetoxy and rapid crosslinking takes place. Acetic acid formation is one of the driving forces of this reaction.

Chemical Properties

Colorless or yellowish transparent liquid

Diacetoxydimethylsilane(2182-66-3)Related Product Information

• Ethyl ethoxyacetate
• Diphenyldimethoxysilane
• Diphenyldiethoxysilane
• tert-Butyldimethylsilyl chloride
• Vinyl acetate
• 1-Methoxy-2-propyl acetate
• Sodium triacetoxyborohydride
• Dimethyldimethoxysilane
• DIMETHYLSILANE
• Dichlorodimethylsilane
• Tetramethyl orthosilicate
• Methyltriacetoxysilane
• Methyltriethoxysilane
• Methyldimethoxysilane
• 2-Butoxyethyl acetate
• Ethylene glycol monoethyl ether acetate
• Tetraethyl orthosilicate
• Chlorodimethylphenylsilane