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Phenyltriethoxysilane

CAS Number
780-69-8
EC Number
212-305-8
Chemical Formula
C12H20O3Si
Molecular Weight
240.37 g/mol

Description

Phenyltriethoxysilane (CAS 780-69-8 ) is an organosilane monomer used to modify surfaces and build silicone-based polymer networks across multiple industrial sectors. It introduces phenyl functionality into silane chemistry, enabling improved thermal stability. This chemical allows for better compatibility with organic substrates and controlled crosslinking behavior in downstream formulations. In coatings and adhesives, it functions as a surface modifier and coupling agent for various materials. It improves adhesion between inorganic substrates, such as glass or metal, and organic resin systems. Formulators in the electronics industry incorporate it into encapsulants and dielectric coatings where phenyl-modified networks offer resistance. In plastics and polymer compounding, it acts as a crosslinking agent and compatibilizer, influencing mechanical performance. It also affects surface wetting in filled systems, making it a versatile component for industrial manufacturing. Personal care formulators use it as a building block for phenyl silicone emollients and film-forming agents. These deliver specific sensory and spreading properties in skin and hair products, enhancing the final consumer experience. Phenyltriethoxysilane is supplied as a clear liquid in standard packaging ranging from drums to IBC containers for bulk procurement. It is available in technical and high-purity grades for diverse needs. Purity specifications are typically at 97% or higher depending on application requirements. Silicone and specialty chemical distributors commonly stock it for use in both R&D and industrial-scale production environments. Contact us for supply of Phenyltriethoxysilane Request Quote

Other Names (Synonyms)

Triethoxy(phenyl)silane | Silane, triethoxyphenyl- | Benzeneorthosiliconic acid, triethyl ester | Benzene, (triethoxysilyl)- | QI310T2X15 | (Triethoxysilyl)benzene

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point<-50°C
Boiling Point235.00 °C
Density0.996 g/cm³
Flash Point109 °F
AppearanceColorless transparent liquid
ColorColorless to Almost colorless
OdorMild odor
Formliquid
Water Solubilityinsoluble
Vapor Pressure0-7910Pa at 20-25℃
Refractive Indexn 20/D 1.461(lit.)
Log P-0.31-3.4 at 22℃

Safety & Handling

Warning
GHS02· FlammableGHS07· IrritantGHS08· Health Hazard

Hazard Statements

H226Flammable liquid and vapor
H315Causes skin irritation
H373May causes damage to organs through prolonged or repeated exposure
H412Harmful to aquatic life with long lasting effects

Precautionary Statements

P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233Keep container tightly closed.
P240Ground and bond container and receiving equipment.
P241Use explosion-proof equipment.
P242Use non-sparking tools.
P243Take action to prevent static discharges.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P501Dispose of contents/container in accordance with local regulations.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P378Use … for extinction.
P235Store in a well-ventilated place. Keep cool.
P353IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.

Trade & Regulatory

HS Code29310095
UN Number1993
ADR Class3
Packing GroupIII
Storage Class3 - Flammable liquids
WGK (Germany)3