(Triacetoxy)ethylsilane Chemical Properties

Melting point:

7-9°C

Boiling point:

98 °C4 mm Hg(lit.)

Density 

1.14 g/mL at 25 °C(lit.)

vapor pressure 

2.67-5.1Pa at 20℃

refractive index 

n20/D 1.411(lit.)

Flash point:

224 °F

form 

clear liquid

Specific Gravity

1.143

color 

Colorless to Light yellow

Water Solubility 

Hydrolyzes in water.

Sensitive 

Moisture Sensitive

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

LogP

0.74

CAS DataBase Reference

17689-77-9(CAS DataBase Reference)

EPA Substance Registry System

Silanetriol, 1-ethyl-, 1,1,1-triacetate (17689-77-9)

Safety Information

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39-45-20

RIDADR 

UN 3265 8/PG 2

WGK Germany 

3

F 

10-21

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

29319090

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

(Triacetoxy)ethylsilane Usage And Synthesis

Introduction

Ethyltriacetoxysilane (ETAS) 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.
It is used as curing agent in acetoxy crosslinking RTV-1 sealant formulations. Within the curing reaction acetic acid is produced as a byproduct. Therefore, the corrosive reaction of the byproduct with substances like marble or iron has to be taken in consideration when using acetate crosslinkers.

Chemical Properties

Colorless or yellowish transparent liquid

Uses

Triacetoxy(ethyl)silane is used in sealants, the substance is used as a cross-linking agent and adhesion promoter.

Flammability and Explosibility

Non flammable

(Triacetoxy)ethylsilane(17689-77-9)Related Product Information

• Triethylsilane
• Triethoxyvinylsilane
• n-Propyltriacetoxysilane
• Ethoxytrimethylsilane
• Sodium triacetoxyborohydride
• Dimethyldimethoxysilane
• Acetoxyacetic acid
• METHOXYTRIMETHYLSILANE
• Vinyltrimethoxyacyloxygroupsilanes
• Methyltriacetoxysilane
• Vinyltriacetoxysilane
• Methyltriethoxysilane
• TRIVINYLMETHYLSILANE
• TRIISOPROPOXYSILANE
• 3-Aminopropyltriethoxysilane
• 3-(2-Aminoethylamino)propyl-dimethoxymethylsilane
• N-(3-Triethoxysilylpropyl)ethylenediamine
• Aluminum acetylacetonate