Description

Tris(Trimethylsiloxy)Chlorosilane is a versatile organosilicon compound that serves as a key intermediate in the synthesis of advanced silicone polymers and functional materials. Its unique structure, featuring both a reactive chlorosilane group and three bulky trimethylsiloxy substituents, makes it invaluable for introducing specific functionalities and controlling polymer architecture. This high-purity chemical is essential for manufacturers in the silicone elastomer, resin, and specialty chemical industries seeking to develop products with tailored properties such as enhanced hydrophobicity, thermal stability, and crosslinking behavior.

Application

• Silicone Crosslinking Agent: Used as a crosslinker or chain extender in the production of high-performance silicone rubbers and elastomers, improving their mechanical strength and heat resistance.
• Surface Modification: Acts as a silylating agent to modify the surface properties of inorganic materials like silica, glass, and metals, imparting hydrophobicity and improving compatibility with organic matrices.
• Silicone Resin Synthesis: A critical building block for manufacturing branched and cage-like silicone resins used in release coatings, protective films, and high-temperature paints.
• Pharmaceutical & Cosmetic Intermediates: Serves as a protected intermediate in the synthesis of siloxane-based compounds for personal care products and controlled-release drug delivery systems.
• Adhesive & Sealant Formulations: Incorporated into specialty silicone adhesives and sealants to enhance adhesion, cure characteristics, and environmental durability.
• Precursor for Functional Silanes: Used as a starting material to synthesize more complex functional silanes with specific reactive groups for further chemical grafting.

Basic Information

Product Name	Tris(Trimethylsiloxy)Chlorosilane
CAS No.	17905-99-6
Molecular Formula	C9H27ClO3Si4
Molecular Weight	327.13 g/mol
Synonyms	Chlorotris(trimethylsiloxy)silane; Tris(trimethylsiloxy)silicon chloride; Silane, chlorotris(trimethylsiloxy)-; 1-Chloro-1,1,3,3,3-pentamethyl-2-[(trimethylsilyl)oxy]disiloxane; TTSCS; (Trimethylsiloxy)trichlorosilane (related); Tris-O-(trimethylsilyl) chlorosilane
EINECS	Contact for details

Quality Control

Our Tris(Trimethylsiloxy)Chlorosilane is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for demanding industrial applications. Each lot is analyzed using advanced techniques including Gas Chromatography (GC) and NMR to verify identity, purity, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment, ensuring full traceability and compliance with your material specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic and highly volatile nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and decomposition. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Chloride Content	10.5 - 11.5 %
Density (at 20°C)	0.95 - 0.98 g/mL
Refractive Index (n20D)	1.390 - 1.395

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