Silicones & Silicates
REACH
Phenyltriethoxysilane
CAS Number
780-69-8
EC Number
212-305-8
What is Phenyltriethoxysilane?
Phenyltriethoxysilane (CAS 780-69-8) is an organosilane monomer used to modify surfaces and build silicone-based polymer networks.
Where is Phenyltriethoxysilane used?
- Coatings and adhesives: surface modifier and coupling agent
- Electronics: encapsulants and dielectric coatings with phenyl-modified networks
- Plastics and polymer compounding: crosslinking agent and compatibilizer
- Personal care: building block for phenyl silicone emollients and film-forming agents
- It introduces phenyl functionality into silane chemistry, enabling improved thermal stability.
Commercial specifications
- Purity typically 97% or higher depending on application requirements
- Clear liquid in drums to IBC containers for bulk procurement
- Technical and high-purity grades
Other Names (Synonyms)
Triethoxy(phenyl)silane|Silane, triethoxyphenyl-|Benzeneorthosiliconic acid, triethyl ester|Benzene, (triethoxysilyl)-|QI310T2X15|(Triethoxysilyl)benzene
What are the physical properties of Phenyltriethoxysilane?
Melting Point <-50°C
Boiling Point 235.00 °C
Density 0.996 g/cm³
Flash Point 109 °F
Appearance Colorless transparent liquid
Color Colorless to Almost colorless
Odor Mild odor
Form liquid
Water Solubility insoluble
Vapor Pressure 0-7910Pa at 20-25℃
Refractive Index n 20/D 1.461(lit.)
Log P -0.31-3.4 at 22℃
How is Phenyltriethoxysilane classified and handled safely? Learn More
Warning
GHS02· Flammable GHS07· Irritant GHS08· Health Hazard
Hazard Statements
H226 Flammable liquid and vapor
H315 Causes skin irritation
H373 May causes damage to organs through prolonged or repeated exposure
H412 Harmful to aquatic life with long lasting effects
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 Phenyltriethoxysilane?
HS Code 29310095
UN Number 1993
ADR Class 3
Packing Group III
Storage Class 3 - Flammable liquids
WGK (Germany) 3