Description

Vinylphenyldiethoxysilane is a versatile organosilicon coupling agent featuring both a vinyl group and a phenyl ring. This dual functionality makes it a critical intermediate for modifying surfaces and enhancing the compatibility between organic polymers and inorganic materials. It is essential for manufacturers in the silicone rubber, advanced composites, adhesives, and coatings industries seeking to improve material performance and durability.

Application

• Surface Modification Agent: Used to treat glass fibers, minerals, and fillers to improve adhesion and dispersion in polymer matrices.
• Crosslinking Agent: Functions as a key component in moisture-curable silicone sealants and RTV (Room Temperature Vulcanizing) rubbers.
• Adhesion Promoter: Enhances the bond strength in coatings, paints, and adhesives on difficult substrates like metals and glass.
• Composite Material Intermediate: Serves as a coupling agent in fiber-reinforced plastics (FRP) and engineering thermoplastics to boost mechanical properties.
• Silicone Resin Modifier: Incorporated to introduce phenyl groups into silicone polymers, improving thermal stability and radiation resistance.
• Chemical Synthesis Building Block: Utilized in organic synthesis for introducing silane functionality into target molecules.

Basic Information

Product Name	Vinylphenyldiethoxysilane
CAS No.	4652-09-9
Molecular Formula	C12H18O2Si
Molecular Weight	222.36 g/mol
Synonyms	Phenylethenyldiethoxysilane; Diethoxy(phenylvinyl)silane; Diethoxy(vinylphenyl)silane; Vinylphenyldiethoxysilane; (Ethenylphenyl)diethoxysilane; Phenylvinyldiethoxysilane; Silane, diethoxy(phenylvinyl)-; A 2171 (Trade Name)
EINECS	225-087-9

Quality Control

Our Vinylphenyldiethoxysilane is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC (Gas Chromatography) and NMR (Nuclear Magnetic Resonance), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.485 - 1.495
Density (20°C)	0.970 - 0.990 g/mL

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