Description

Tris(Trimethylsiloxy)Siloxydichlorosilane is a highly functionalized organosilicon compound that serves as a versatile building block in advanced silicone chemistry. Its unique structure, featuring both reactive chlorosilane and inert siloxy groups, makes it a critical precursor for synthesizing complex, branched, and cross-linked siloxane polymers. This chemical is essential for manufacturers and R&D laboratories seeking to develop high-performance materials with tailored properties. Key industries that utilize this compound include specialty silicone production, advanced coatings, and electronics.

Application

• Silicone Resin & Polymer Synthesis: A key monomer for creating highly branched, cross-linked silicone resins with enhanced thermal stability and mechanical properties.
• Surface Modification & Coupling Agent: Used to functionalize inorganic surfaces (e.g., silica, glass) with hydrophobic siloxane layers, improving compatibility with organic matrices.
• Specialty Silicone Fluids & Elastomers: Imparts specific rheological and curing characteristics to high-performance silicone oils, gels, and rubbers.
• Electronic Encapsulants & Potting Compounds: Contributes to the formulation of protective materials with excellent dielectric properties and environmental resistance for electronic components.
• Release Coatings & Adhesives: Acts as an intermediate in the production of non-stick silicone release liners and pressure-sensitive adhesives.
• Hybrid Organic-Inorganic Materials (ORMOSILs): Serves as a precursor in sol-gel processes to create optically clear, robust hybrid coatings and films.
• Laboratory Reagent: Used in organic and polymer chemistry research for the controlled introduction of siloxane functionalities.
• Water Repellent Treatments: A component in formulations for durable water-repellent coatings on textiles, stone, and construction materials.

Basic Information

Product Name	Tris(Trimethylsiloxy)Siloxydichlorosilane
CAS No.	216393-93-0
Molecular Formula	C9H27Cl2O3Si5
Molecular Weight	437.62 g/mol
Synonyms	Dichloro[tris(trimethylsiloxy)silyloxy]silane; 1,1,1,3,5,5,5-Heptamethyl-3-(trichlorosilyl)trisiloxane (common misnomer for related structure); Tris(trimethylsiloxy)silyloxy Dichlorosilane; Chloro[tris(trimethylsiloxy)siloxy]silane; TTSSDCS; Silane, dichloro[tris(trimethylsiloxy)silyloxy]-; Heptamethyltrisiloxanyl Dichlorosilane
EINECS	Contact for details

Quality Control

Our Tris(Trimethylsiloxy)Siloxydichlorosilane is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of advanced material synthesis. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing key parameters such as assay, identity, and impurity profiles. We are committed to supporting our clients' quality systems and can provide documentation to meet relevant industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic and moisture-sensitive nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis. Store away from strong acids and incompatible materials. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or NMR)	≥ 95.0%
Chloride Content (Titration)	15.8 - 16.5 %
Density (at 20°C)	1.00 - 1.05 g/mL
Refractive Index (n20D)	1.390 - 1.400

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