3069-42-9

Name Octadecyltrimethoxysilane
CAS 3069-42-9
EINECS(EC#) 221-339-2
Molecular Formula C21H46O3Si
MDL Number MFCD00043060
Molecular Weight 374.67
MOL File 3069-42-9.mol
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Chemical Properties

Appearance Colorless transparent liquid
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.)
Fp  284 °F
storage temp.  Inert atmosphere,Room Temperature
solubility  Chloroform (Slightly)
form  liquid
color  Colourless
Specific Gravity 0.883
Stability: Stable. Incompatible with strong oxidizing agents. Moisture sensitive.
Water Solubility  190-437000ng/L at 20℃
Hydrolytic Sensitivity 7: reacts slowly with moisture/water
BRN  5791830
InChI 1S/C21H46O3Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-25(22-2,23-3)24-4/h5-21H2,1-4H3
InChIKey SLYCYWCVSGPDFR-UHFFFAOYSA-N
SMILES CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC
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 Data

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P280-P261
Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
WGK Germany  1
F  10-21
TSCA  Yes
HS Code  29319090
Storage Class 10 - Combustible liquids

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