Description

Chloromethyltris(Trimethylsiloxy)Silane is a specialized organosilicon compound that serves as a versatile building block in advanced material synthesis. Its unique molecular structure, featuring both a reactive chloromethyl group and hydrolytically stable trimethylsiloxy moieties, makes it a critical intermediate for introducing functional silane units into polymers and surfaces. This product is essential for R&D and production teams in the silicone, coatings, and electronics industries seeking to enhance material properties like adhesion, hydrophobicity, and cross-linking efficiency.

Application

• Silicone Resin & Polymer Modification: Acts as a functional monomer or cross-linking agent to introduce chloromethyl functionality, improving thermal stability and mechanical properties.
• Surface Treatment & Coupling Agent: Used to modify inorganic surfaces (glass, silica, metals) to enhance adhesion and compatibility with organic matrices in composite materials.
• Hydrophobic Coating Formulations: A key precursor for creating water-repellent and anti-corrosive coatings for construction, automotive, and marine applications.
• Electronics & Semiconductor Industry: Employed in the synthesis of dielectric materials, encapsulants, and as a surface passivation agent for microelectronic components.
• Pharmaceutical & Agrochemical Intermediates: Serves as a protected silane reagent in the multi-step synthesis of active ingredients and drug delivery systems.
• Adhesive & Sealant Formulations: Imparts improved bonding strength and moisture resistance in high-performance silicone-based adhesives and sealants.

Basic Information

Product Name	Chloromethyltris(Trimethylsiloxy)Silane
CAS No.	41919-30-6
Molecular Formula	C10H27ClO3Si4
Molecular Weight	327.13 g/mol
Synonyms	(Chloromethyl)tris(trimethylsiloxy)silane; Tris(trimethylsiloxy)(chloromethyl)silane; Silane, (chloromethyl)tris(trimethylsiloxy)-; Chloromethyl-tris-O-(trimethylsilyl) silicate; CTMSS; (Chloromethyl)silanol trimethylsilyl ether; 1-Chloro-2,2,2-tris(trimethylsiloxy)ethane (alternative representation); (Trimethylsiloxy)3SiCH2Cl
EINECS	Contact for details

Quality Control

Our Chloromethyltris(Trimethylsiloxy)Silane is manufactured under stringent quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical specifications. Our quality commitment ensures the material meets the exacting standards required for research and industrial applications.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Chlorine Content	10.5 - 11.5 %
Water Content (KF)	≤ 0.1%
Density (25°C)	0.95 - 0.98 g/mL
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.