Silicones & Silicates
REACH
Vinyltriethoxysilane
CAS Number
78-08-0
EC Number
201-081-7
Abbreviation
VTEO
What is Vinyltriethoxysilane?
Vinyltriethoxysilane (CAS 78-08-0), abbreviated VTEO, is an organosilane coupling agent that bridges inorganic substrates and organic polymer matrices.
Where is Vinyltriethoxysilane used?
- Adhesives, sealants and coatings: reactive monomer and surface modifier
- XLPE production: grafted onto polyethylene chains for moisture-cure crosslinking
- Wire and cable insulation: critical for durability
- Rubber and silicone sealants: improved adhesion to glass, metal and mineral fillers
- Coatings and primers: VTEO-treated surfaces improve adhesion of organic topcoats to glass fiber and silica
- Electronics: surface treatment for encapsulants and laminates
- It is also effective on other inorganic substrates.
Commercial specifications
- Drums and IBC containers for industrial volumes
- Technical grade standard, purity 97% or higher
- Specialty electronic and high-purity grades from select producers
Other Names (Synonyms)
Triethoxy(vinyl)silane|Silane, ethenyltriethoxy-|Silane, triethoxyvinyl-|VTES|Silane A 151|VTEO
What are the physical properties of Vinyltriethoxysilane?
Melting Point <0°C
Boiling Point 160-161 °C
Density 0.903 g/cm³
Flash Point 94 °F
Appearance Colorless transparent liquid
Color colorless
Odor Fruity odor
Form liquid
Water Solubility decomposes
Vapor Pressure 7 hPa (20 °C)
Refractive Index n 20/D 1.398(lit.)
How is Vinyltriethoxysilane classified and handled safely? Learn More
Warning
GHS02· Flammable GHS07· Irritant
Hazard Statements
H226 Flammable liquid and vapor
H319 Causes serious eye irritation
H335 May cause respiratory irritation
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.
Which trade and regulatory codes apply to Vinyltriethoxysilane?
HS Code 29310095
UN Number 1993
ADR Class 3
Packing Group III
WGK (Germany) 2