Description

Bis(Chloromethyl)Methylchlorosilane is a highly reactive organosilicon compound that serves as a critical multifunctional building block in advanced material synthesis. Its value lies in its ability to introduce reactive chloromethyl and chlorosilyl groups into polymer backbones and surfaces, enabling precise cross-linking and functionalization. This chemical is essential for manufacturers in the silicone polymer, specialty coatings, and pharmaceutical intermediate sectors seeking to develop materials with tailored properties such as enhanced adhesion, thermal stability, or chemical resistance.

Application

• Silicone Resin & Polymer Modification: Acts as a key cross-linking agent and chain extender in the synthesis of high-performance silicone resins, rubbers, and elastomers.
• Surface Functionalization Agent: Used to modify inorganic surfaces (e.g., silica, glass) by grafting reactive chloromethyl groups for subsequent chemical attachment.
• Pharmaceutical & Agrochemical Intermediates: Serves as a versatile synthon for constructing complex molecules in active pharmaceutical ingredient (API) and crop protection agent development.
• Adhesive & Sealant Formulations: Imparts improved adhesion to substrates and enhances the mechanical properties of silicone-based adhesives and sealants.
• Flame Retardant Additive Precursor: Utilized in the production of silicon-containing flame retardants for plastics and textiles.
• Specialty Coating Cross-linker: Provides reactive sites for curing in high-temperature and corrosion-resistant coating systems.
• Dendrimer & Hyperbranched Polymer Synthesis: Functions as a multifunctional core or branching unit in the controlled synthesis of complex polymeric architectures.

Basic Information

Item	Detail
Product Name	Bis(Chloromethyl)Methylchlorosilane
CAS No.	18171-56-7
Molecular Formula	C3H7Cl3Si
Molecular Weight	177.53 g/mol
Synonyms	(Chloromethyl)dimethylchlorosilane (common misnomer); Methylbis(chloromethyl)chlorosilane; Chloromethyl-dimethylsilyl chloride; 1,3-Dichloro-2-methyl-2-silapropane; (Dichloromethyl)methylchlorosilane; (Chloromethyl)methyldichlorosilane (related isomer); MeSi(CH2Cl)2Cl
EINECS	Contact for details

Quality Control

Our Bis(Chloromethyl)Methylchlorosilane is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets the exacting standards required for synthetic applications. A Certificate of Analysis (COA) detailing specific results for purity, moisture content, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your R&D and production needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at 15-25°C. Due to its highly volatile and hygroscopic nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Water Content (Karl Fischer)	≤ 0.1%
Density (at 20°C)	~1.25 g/cm³
Refractive Index (n20D)	~1.465

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