Description

Chloromethylmethyldiethoxysilane is a versatile organosilicon compound, specifically a chloromethyl-functional alkoxysilane. Its bifunctional nature, featuring both a reactive chloromethyl group and hydrolyzable ethoxy groups, makes it a valuable coupling agent and intermediate for introducing silane functionality into organic matrices. This product is essential for manufacturers in the silicone polymers, adhesives, and surface treatment industries seeking to enhance material properties like adhesion, cross-linking density, and compatibility.

Application

• Silicone Intermediate: A key monomer for the synthesis of specialty silicone resins and polymers with chloromethyl functionality.
• Surface Modifier: Used as a coupling agent to treat inorganic fillers (e.g., silica, glass) to improve their dispersion and bonding in organic polymer systems like epoxy or polyurethane.
• Adhesive & Sealant Formulation: Imparts improved adhesion to various substrates, including metals and glass, in high-performance sealants and adhesives.
• Cross-linking Agent: Functions as a cross-linker in room-temperature vulcanizing (RTV) silicone rubbers and other polymer systems.
• Fiber Treatment: Applied as a sizing or finishing agent for glass or carbon fibers to enhance the interfacial strength in composite materials.
• Pharmaceutical & Agrochemical Intermediate: Serves as a building block in the synthesis of more complex molecules for pharmaceutical and agrochemical applications.
• Hydrophobic Coatings: A precursor for creating water-repellent surface treatments on construction materials, textiles, or electronics.

Basic Information

Product Name	Chloromethylmethyldiethoxysilane
CAS No.	2212-10-4
Molecular Formula	C6H15ClO2Si
Molecular Weight	182.72 g/mol
Synonyms	(Chloromethyl)methyldiethoxysilane; Methyldiethoxysilylmethyl Chloride; Diethoxy(chloromethyl)methylsilane; Chloromethyl(methyl)diethoxysilane; Silane, (chloromethyl)methyldiethoxy-; Diethoxy(methyl)(chloromethyl)silane; (Chloromethyl)methyldiethyloxysilane; MDES-Cl
EINECS	218-667-4

Quality Control

Our Chloromethylmethyldiethoxysilane is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and titration methods, to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key specifications such as assay, identity, and impurity profiles. Our quality system is designed to meet the demanding requirements of industrial and R&D applications.

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/59-77°F). This product is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	1.00 - 1.05 g/cm³
Refractive Index (n20D)	1.410 - 1.420
Chlorine Content	Contact for details

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