Description

Phenyltriethoxysilane is a versatile organosilicon compound, specifically a phenyl-functionalized trialkoxysilane. Its primary value lies in its dual functionality, where the hydrolyzable ethoxy groups enable covalent bonding to inorganic surfaces, while the stable phenyl group imparts organic compatibility and specific material properties. This product is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producers of advanced composites and silica-based materials seeking to modify surface characteristics and enhance performance.

Application

• As a key coupling agent and surface modifier in mineral-filled composites (e.g., fiberglass, silica, minerals) to improve interfacial adhesion and dispersion.
• As a precursor for synthesizing phenyl-functionalized silicone resins and polymers, contributing to heat resistance, hydrophobicity, and dielectric properties.
• In the formulation of water repellents and protective coatings for construction materials like concrete, stone, and brick.
• As a surface treatment agent for nanoparticles (e.g., silica, metal oxides) to prevent agglomeration and facilitate integration into organic matrices.
• In the production of release coatings and mold-making materials where a phenyl group provides specific surface energy and release characteristics.
• As an intermediate in the synthesis of more complex silane derivatives and specialty chemicals for electronics and optics applications.

Basic Information

Product Name	Phenyltriethoxysilane
CAS No.	780-69-8
Molecular Formula	C12H20O3Si
Molecular Weight	240.37 g/mol
Synonyms	Phenyltriethoxysilane; Triethoxyphenylsilane; Phenethyltriethoxysilane; Phenyltriethoxy silane; Silane, triethoxyphenyl-; Phenyl triethoxysilane; Triethoxy(phenyl)silane; EINECS 212-307-6
EINECS	212-307-6

Quality Control

Our Phenyltriethoxysilane is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment, guaranteeing traceability and consistency for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and ignition sources. Due to its hygroscopic and highly volatile nature, the container must be kept tightly sealed under dry conditions (e.g., under an inert atmosphere or with desiccant) to prevent moisture absorption and product loss. Recommended storage temperature: 2-25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Purity (GC)	≥ 98.0%
Refractive Index (n20D)	1.460 - 1.465
Density (20°C)	0.99 - 1.01 g/cm³
Water Content (Karl Fischer)	≤ 0.1%

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