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Octadecyltrimethoxysilane

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Octadecyltrimethoxysilane Basic information

Product Name:
Octadecyltrimethoxysilane
Synonyms:
  • OCTADECYLTRIMETHOXYSILANE
  • N-OCTADECYLTRIMETHOXYSILANE
  • STEARYLTRIMETHOXYSILANE
  • Silane, trimethoxyoctadecyl-
  • Trimethoxysilyloctadecane
  • 18,18,18-trimethoxyoctadecylsilicon
  • TriMethoxy(octadecyl)silane technical grade, 90%
  • trimethoxyoctadecyl-silan
CAS:
3069-42-9
MF:
C21H46O3Si
MW:
374.67
EINECS:
221-339-2
Product Categories:
  • Alkoxy Silanes
  • Hydrophobing Agents
  • Alkyl
  • Functional Materials
  • Si (Classes of Silicon Compounds)
  • Silane Coupling Agents
  • Silane Coupling Agents (Intermediates)
  • Si-O Compounds
  • Trialkoxysilanes
Mol File:
3069-42-9.mol
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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)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
1
10-21
TSCA 
Yes
HS Code 
29319090

MSDS

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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.

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