Description

Vinylmethylbis(Trimethylsiloxy)Silane is a specialized organosilicon compound with the CAS number 5356-85-4, valued for its unique bifunctional reactivity. This chemical serves as a critical intermediate and cross-linking agent in advanced material synthesis, offering both vinyl and siloxy functional groups. It is essential for manufacturers in the silicone polymer, specialty coatings, and adhesives industries seeking to enhance material properties such as hydrophobicity, thermal stability, and adhesion.

Application

• Key monomer and cross-linker in the synthesis of silicone resins and high-performance elastomers.
• Surface modification agent for inorganic fillers (e.g., silica, glass) to improve dispersion and compatibility in polymer matrices.
• Intermediate in the production of moisture-curable sealants and adhesives for construction and automotive applications.
• Precursor for creating tailored silane coupling agents with specific organic functionalities.
• Used in the formulation of release coatings and protective films.
• Component in the synthesis of hybrid organic-inorganic materials (ORMOSILs) for optical and electronic applications.
• Building block for specialty silicones used in personal care and cosmetic products.

Basic Information

Product Name	Vinylmethylbis(Trimethylsiloxy)Silane
CAS No.	5356-85-4
Molecular Formula	C10H28O2Si3
Molecular Weight	264.59 g/mol
Synonyms	Bis(trimethylsiloxy)methylvinylsilane; Methylvinylbis(trimethylsiloxy)silane; Vinylmethylbis(trimethylsiloxy)silane; Silane, vinylmethylbis(trimethylsiloxy)-; 1,1,1,3,3,3-Hexamethyl-2-(vinylmethyl)-2-trisilanamine; (Vinylmethyl)bis(trimethylsiloxy)silane; (Methylvinyl)bis(trimethylsiloxy)silane
EINECS	226-337-7

Quality Control

Our Vinylmethylbis(Trimethylsiloxy)Silane is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including GC, NMR, and FTIR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment 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) and should be handled under a dry inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.86 - 0.88 g/cm³
Refractive Index (n20D)	1.405 - 1.415

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