Description

Ethoxydimethylvinylsilane is a versatile organosilicon compound featuring both a hydrolyzable ethoxy group and a reactive vinyl functionality. This dual reactivity makes it a crucial intermediate for introducing vinyl groups into siloxane polymers and for surface modification applications. It is primarily used by manufacturers in the silicone, adhesive, and advanced materials industries seeking to enhance product performance through cross-linking and functionalization.

Application

• Silicone Polymer Synthesis: A key monomer or cross-linking agent in the production of vinyl-functional silicone fluids, resins, and elastomers (e.g., HCR, LSR).
• Adhesives & Sealants: Imparts improved adhesion and cross-linking density in silicone-based adhesive and sealant formulations.
• Surface Modification: Used as a silylating agent to introduce hydrophobic vinyl groups onto inorganic surfaces like silica, glass, or metals.
• Release Coatings: Serves as a component in platinum-catalyzed addition cure systems for premium release liners.
• Rubber & Plastic Additives: Functions as a coupling agent or processing aid to improve the compatibility between organic polymers and inorganic fillers.
• Pharmaceutical & Cosmetic Intermediates: Employed in the synthesis of specialized siloxane-based ingredients.

Basic Information

Product Name	Ethoxydimethylvinylsilane
CAS No.	5356-83-2
Molecular Formula	C6H14OSi
Molecular Weight	130.26 g/mol
Synonyms	Dimethylvinyl Ethoxysilane; Vinyl Dimethyl Ethoxysilane; Ethoxy(dimethyl)vinylsilane; Dimethyl(vinyl)ethoxysilane; (Dimethyl)(vinyl)ethoxysilane; (Ethenyl)dimethyl Ethoxysilane; VDMES; Contact for additional synonyms.
EINECS	226-317-5

Quality Control

Our Ethoxydimethylvinylsilane is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using GC, NMR, and titration methods to verify identity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory needs.

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). Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to prevent moisture absorption and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (20°C)	0.78 - 0.80 g/mL
Refractive Index (n20D)	1.395 - 1.405
Water Content (KF)	≤ 0.1%

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