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Triethoxyoctylsilane

Basic information Description Safety Supplier Related

Triethoxyoctylsilane Basic information

Product Name:
Triethoxyoctylsilane
Synonyms:
  • a137(couplingagent)
  • CO9835
  • Dynasylan OCTEO
  • dynasylanocteo
  • n-octyltriethoaysilane(30m3)
  • n-octyltriethoaysilane(30m35)
  • n-octyltriethoaysilane(30m3m)
  • n-octyltriethoaysilane(32m18)
CAS:
2943-75-1
MF:
C14H32O3Si
MW:
276.49
EINECS:
220-941-2
Product Categories:
  • silane
  • Alkyl
  • Functional Materials
  • Si (Classes of Silicon Compounds)
  • Silane Coupling Agents
  • Silane Coupling Agents (Intermediates)
  • Si-O Compounds
  • Trialkoxysilanes
  • Alkoxy Silanes
  • Hydrophobing Agents
Mol File:
2943-75-1.mol
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Triethoxyoctylsilane Chemical Properties

Melting point:
<-40°C
Boiling point:
84-85 °C0.5 mm Hg(lit.)
Density 
0.88 g/mL at 25 °C(lit.)
vapor pressure 
0.1 hPa (20 °C)
refractive index 
n20/D 1.417(lit.)
Flash point:
210 °F
storage temp. 
Store below +30°C.
solubility 
Acetonitrile (Slightly), Chloroform (Slightly)
form 
liquid
Specific Gravity
0.875
color 
Colorless to Almost colorless
Water Solubility 
reacts
Sensitive 
Moisture Sensitive
Hydrolytic Sensitivity
7: reacts slowly with moisture/water
BRN 
2325287
InChIKey
MSRJTTSHWYDFIU-UHFFFAOYSA-N
LogP
-0.3-6.41 at 20℃
CAS DataBase Reference
2943-75-1(CAS DataBase Reference)
NIST Chemistry Reference
N-Octyltriethoxysilane(2943-75-1)
EPA Substance Registry System
Triethoxyoctylsilane (2943-75-1)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-37/39
WGK Germany 
1
RTECS 
VV6695500
10-21
TSCA 
Yes
HS Code 
29310095
Toxicity
LD50 orally in Rabbit: 5110 mg/kg LD50 dermal Rabbit 5142 mg/kg

MSDS

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Triethoxyoctylsilane Usage And Synthesis

Description

Triethoxyoctylsilane is a monomeric medium-chain alkylfunctional silane. It is a clear colourless liquid and soluble in common non-polar organic solvent.
Triethoxyoctylsilane can be used as a surface modifier to generate hydrophobicity (e.g. on concrete, glass, inorganic pigments, or mineral fillers).
When diluted with an appropriate solvent, it can be used in the formulation of water repellent products. Upon proper application, the formulated product will penetrate and provide water repellency by chemically reacting with the cementitious substrate. Treated substrates are hydrophobic and retain their original appearance.

Chemical Properties

Colorless transparent liquid

Uses

Triethoxy(octyl)silane is a hydrophobization agent used to limit coalescence in solid-stabilized emulsions.

Definition

ChEBI: Octyltriethoxysilane is an organosilicon compound.

General Description

Triethoxy(octyl)silane (TEOS) is an alkoxide organosilane with four ethyl ester sidechains. It is used as a self-assembled monolayer and provides a hydrophobic coating with low surface energy. The water contact angle is in the range of 150-170°.

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