Description

3-Cyanopropyldimethylmethoxysilane is a versatile organosilicon coupling agent featuring both a reactive methoxysilane group and a cyano-functional organic chain. This bifunctional structure makes it a critical intermediate for modifying surfaces and polymers, enhancing adhesion, and introducing specific chemical functionality. It is essential for manufacturers in the silicone rubber, adhesives, and advanced materials sectors seeking to improve product performance and durability.

Application

• Silicone Rubber Modification: Acts as a crosslinking agent or property modifier to enhance the mechanical strength and chemical resistance of silicone elastomers.
• Adhesive & Sealant Formulations: Improves adhesion to difficult substrates like metals, glass, and plastics by promoting interfacial bonding.
• Surface Treatment Agent: Used to functionalize inorganic surfaces (e.g., silica, glass fibers) to improve compatibility with organic polymer matrices in composites.
• Polymer Synthesis: Serves as a monomer or chain transfer agent in the synthesis of specialty polyorganosiloxanes with tailored properties.
• Intermediate for Further Synthesis: The cyano group can be hydrolyzed to carboxylic acid or reduced to amine, enabling the synthesis of a wider range of functional silanes.
• Filler Treatment: Enhances the dispersion and interfacial bonding of mineral fillers in plastic and rubber compounds, leading to improved composite performance.

Basic Information

Product Name	3-Cyanopropyldimethylmethoxysilane
CAS No.	143203-47-8
Molecular Formula	C7H15NO2Si
Molecular Weight	173.29 g/mol
Synonyms	Dimethyl(3-cyanopropoxy)silane; (3-Cyanopropyl)dimethoxymethylsilane; 3-Cyanopropyldimethoxymethylsilane; γ-Cyanopropyldimethylmethoxysilane; (3-Cyanopropyl)methoxydimethylsilane; Methoxy(3-cyanopropyl)dimethylsilane; Silane, methoxy(3-cyanopropyl)dimethyl-; Dow Corning® Z-6341 (or equivalent trade names)
EINECS	Contact for details

Quality Control

Our production of 3-Cyanopropyldimethylmethoxysilane adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including assay by GC, identity confirmation (IR), and impurity profiling, to ensure consistency and high purity. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation by atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.425 - 1.435
Density (20°C)	0.92 - 0.96 g/mL

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