Octadecyltrimethoxysilane Chemical Properties

Melting point:

16-17 °C(lit.)

Boiling point:

170 °C (0.1 mmHg)

Density 

0.883 g/mL at 25 °C(lit.)

vapor pressure 

0.001Pa at 25℃

refractive index 

n20/D 1.439(lit.)

Flash point:

284 °F

storage temp. 

Inert atmosphere,Room Temperature

solubility 

Chloroform (Slightly)

form 

liquid

color 

Colourless

Specific Gravity

0.883

Water Solubility 

190-437000ng/L at 20℃

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

BRN 

5791830

Stability:

Stable. Incompatible with strong oxidizing agents. Moisture sensitive.

InChIKey

SLYCYWCVSGPDFR-UHFFFAOYSA-N

LogP

6

CAS DataBase Reference

3069-42-9(CAS DataBase Reference)

NIST Chemistry Reference

Octadecyltrimethoxysilane(3069-42-9)

EPA Substance Registry System

Silane, trimethoxyoctadecyl- (3069-42-9)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

1

F 

10-21

TSCA 

Yes

HS Code 

29319090

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

Octadecyltrimethoxysilane Usage And Synthesis

Chemical Properties

Colorless transparent liquid

Uses

OTS is used for the development of self assembled monolayers(SAMs). OTS is also used to modify the silica dielectric surface in organic field effect transistors.

Uses

For preparing hydrophobic coatings and self-assembled monolayers.

General Description

Trimethoxy(octadecyl)silane (OTS) is an important alkylsilane that can form strong covalent bonds with silicon oxide and serves as a potential lubricant for micro electro mechanical systems (MEMS). OTS is largely used for surface chemical modification, modifying silica resulted in an increased charge carrier mobility for a variety of vacuum deposited and solution cast organic semiconductors.

Octadecyltrimethoxysilane(3069-42-9)Related Product Information

• Tetraethyl orthosilicate
• N-OCTADECYLTRICHLOROSILANE
• 3-Chloropropyltrimethoxysilane
• 3-Aminopropyltrimethoxysilane
• Trimethoxypropylsilane
• Trimethoxysilylpropanethiol
• Trimethoxysilane
• Vinyltrimethoxysilane
• N-OCTADECYLTRIETHOXYSILANE
• Dichloromethylvinylsilane
• Phenyltriethoxysilane
• Diethoxy(methyl)vinylsilane
• N-(N-OCTADECYL)ACRYLAMIDE
• Trimethylstearylammonium Chloride
• DODECAMETHYLPENTASILOXANE
• N,N-Dimethyloctadecylamine
• Benzyldimethylstearylammonium Chloride
• Octadecy trimethyl ammonium bromide