Description

Phenethyltrimethoxysilane is a versatile organosilicon coupling agent featuring a phenethyl group and three reactive methoxy silane functionalities. This compound is valued for its ability to enhance the adhesion and compatibility between organic polymers and inorganic substrates, such as glass, metals, and minerals. It is primarily utilized by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced composite materials and surface modification technologies.

Application

• As a coupling agent and adhesion promoter in epoxy, polyurethane, and acrylic-based coatings and adhesives.
• For the surface treatment of glass fibers, minerals, and fillers to improve dispersion and interfacial bonding in polymer composites.
• As a key intermediate in the synthesis of specialty silane-modified polymers (SMP) and hybrid organic-inorganic materials.
• In the formulation of moisture-curable sealants and RTV silicones to enhance mechanical properties and substrate adhesion.
• For primer formulations to improve the bond strength on difficult-to-adhere surfaces like metals and plastics.
• In the production of release coatings and surface modifiers where specific hydrophobic or oleophobic properties are required.

Basic Information

Product Name	Phenethyltrimethoxysilane
CAS No.	49539-88-0
Molecular Formula	C₁₁H₁₈O₃Si
Molecular Weight	226.34 g/mol
Synonyms	2-Phenylethyltrimethoxysilane; (2-Phenylethyl)trimethoxysilane; Trimethoxy(2-phenylethyl)silane; Phenethyltrimethoxysilane; Silane, trimethoxy(2-phenylethyl)-; 49539-88-0; Phenethyl trimethoxy silane
EINECS	Contact for details

Quality Control

Our Phenethyltrimethoxysilane is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay, purity verification, and impurity profiling, to ensure it meets the high standards required for industrial and research applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and product integrity.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent moisture absorption and hydrolysis.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.470 - 1.480
Density (g/mL, 20°C)	1.010 - 1.030

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.