Description

(Chloromethyl)(Methyl)Silane is a highly reactive organosilicon compound that serves as a versatile building block in advanced material synthesis. Its bifunctional nature, featuring both a chloromethyl and a methyl group attached to silicon, makes it a critical precursor for introducing specific silane functionality into polymers and surfaces. This product is essential for R&D and production teams in the specialty chemical, pharmaceutical intermediate, and advanced materials sectors seeking to develop novel silicone-based polymers, surface modifiers, or coupling agents.

Application

• Silicone Polymer Modification: Acts as a key monomer or cross-linking agent in the synthesis of specialty polysiloxanes with tailored properties.
• Surface Treatment & Coupling Agent: Used to functionalize inorganic surfaces (e.g., glass, silica) to improve adhesion with organic polymers in composite materials.
• Pharmaceutical Intermediate: Serves as a building block in the synthesis of organosilicon-based active pharmaceutical ingredients (APIs) or prodrugs.
• Precursor for Further Synthesis: The reactive chloromethyl group allows for subsequent nucleophilic substitution, enabling the creation of a wide range of custom (methyl)silane derivatives.
• Adhesive & Sealant Formulations: Incorporated to enhance specific performance characteristics such as cure kinetics, flexibility, or chemical resistance.
• Research & Development: A valuable reagent for academic and industrial research in organosilicon chemistry and material science.

Basic Information

Product Name	(Chloromethyl)(Methyl)Silane
CAS No.	18165-20-3
Molecular Formula	C2H7ClSi
Molecular Weight	94.61 g/mol
Synonyms	Chloromethylmethylsilane; Methyl(chloromethyl)silane; Silane, chloromethylmethyl-; (Chloromethyl)methylsilane; Monochloromethylmethylsilane; Chloromethyldimethylsilane (common misnomer); Dimethylchloromethylsilane (common misnomer); (Methyl)(chloromethyl)silane
EINECS	242-060-4

Quality Control

Our (Chloromethyl)(Methyl)Silane is manufactured under controlled conditions to ensure batch-to-batch consistency and high purity. Quality is verified through a suite of analytical techniques including Gas Chromatography (GC) and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials such as strong acids, bases, and oxidizing agents. Due to its highly volatile nature, ensure containers are kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to maintain purity and prevent moisture ingress. Recommended storage temperature: 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.92 - 0.96 g/mL
Refractive Index (n20D)	1.415 - 1.425
Water Content (KF)	≤ 0.1%

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