Octadecyltrimethoxysilane

Synonym(s):Octadecyltrimethoxysilane

CAS NO.：3069-42-9
Empirical Formula: C21H46O3Si
Molecular Weight: 374.67
MDL number: MFCD00043060
EINECS: 221-339-2
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-04 20:04:50

What is Octadecyltrimethoxysilane?

Chemical properties

Colorless transparent liquid

The Uses of Octadecyltrimethoxysilane

For preparing hydrophobic coatings and self-assembled monolayers.

The Uses of Octadecyltrimethoxysilane

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.

What are the applications of Application

Trimethoxy(octadecyl)silane is 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.

Properties of Octadecyltrimethoxysilane

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
Specific Gravity	0.883
color	Colourless
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.
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 for Octadecyltrimethoxysilane

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection.