Description

3-Chloropropylmethyldimethoxysilane is a bifunctional organosilicon compound featuring both a reactive chloropropyl group and hydrolyzable methoxysilane functionality. This unique structure makes it a crucial coupling agent and intermediate for modifying surfaces and polymers, enhancing adhesion and compatibility between organic and inorganic materials. It is essential for manufacturers in the silicone rubber, adhesive, sealant, and advanced composite materials industries seeking to improve product performance.

Application

• Coupling Agent for Mineral-Filled Composites: Enhances the bonding between inorganic fillers (like silica, glass fibers) and organic polymer matrices (epoxy, polyurethane, phenolics), improving mechanical strength and durability.
• Surface Treatment for Glass and Minerals: Used to functionalize glass fibers, quartz, and other minerals to provide a hydrophobic and organophilic surface, promoting better resin wetting and adhesion.
• Intermediate for Silicone Synthesis: Serves as a key building block in the production of specialized silicone oils, resins, and cross-linkers with specific functional properties.
• Adhesive and Sealant Formulations: Improves the adhesion of silicone-based sealants and adhesives to various substrates, including metals, plastics, and glass.
• Filler Treatment in Rubber Compounds: Modifies the surface of fillers in silicone rubber and other elastomers to reduce viscosity, improve dispersion, and enhance physical properties.
• Preparation of Functionalized Silanes: Acts as a precursor for synthesizing other organofunctional silanes through nucleophilic substitution of the chlorine atom.

Basic Information

Product Name	3-Chloropropylmethyldimethoxysilane
CAS No.	18171-19-2
Molecular Formula	C6H15ClO2Si
Molecular Weight	182.72 g/mol
Synonyms	(3-Chloropropyl)methyldimethoxysilane; Methyldimethoxy(3-chloropropyl)silane; 3-Chloropropyldimethoxymethylsilane; Chloropropylmethyldimethoxysilane; Dynasylan® 1506; Silane, (3-chloropropyl)methyldimethoxy-; Dow Corning® Z-6076; M 9050; KBM-702; CG-6720
EINECS	242-066-3

Quality Control

Our production of 3-Chloropropylmethyldimethoxysilane adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay (GC), purity verification, and control of key impurities, to ensure consistency and reliability for industrial applications. Certificates of Analysis (COA) documenting all specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is moisture-sensitive (hygroscopic); keep containers tightly sealed to prevent hydrolysis upon contact with atmospheric moisture. Store away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Density (25°C)	1.070 - 1.090 g/cm³
Refractive Index (n20/D)	1.418 - 1.422
Chlorine Content	18.5 - 20.0%

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