Description

3-Cyanobutylmethyldimethoxysilane is a specialized organosilicon compound featuring both cyano and methoxysilane functional groups. This unique bifunctional structure makes it a valuable coupling agent and intermediate for modifying material surfaces and synthesizing advanced polymers. It is primarily sought by manufacturers in the silicone rubber, adhesive, and specialty coatings industries seeking to enhance adhesion to substrates or introduce specific chemical functionality.

Application

• As a coupling agent in silicone rubber formulations to improve adhesion to organic polymers and metals.
• A key intermediate for the synthesis of functionalized silanes and silicone polymers with tailored properties.
• Surface modification of inorganic fillers (e.g., silica, glass) to improve compatibility and dispersion in polymer matrices.
• Used in the production of moisture-curable adhesives and sealants where the methoxysilane groups provide crosslinking sites.
• Potential monomer for creating polyimides or other high-performance resins with enhanced thermal and mechanical characteristics.
• Application in fiber treatment for glass or carbon fibers to strengthen the fiber-matrix interface in composites.

Basic Information

Product Name	3-Cyanobutylmethyldimethoxysilane
CAS No.	793681-94-4
Molecular Formula	C8H17NO2Si
Molecular Weight	187.31 g/mol
Synonyms	Methyldimethoxy(3-cyanopropyl)silane; (3-Cyanopropyl)methyldimethoxysilane; 3-Cyanopropylmethyldimethoxysilane; Methyldimethoxy(3-cyanobutyl)silane; Silane, methyldimethoxy(3-cyanopropyl)-; MDMOS-CN; γ-Cyanopropylmethyldimethoxysilane
EINECS	Contact for details

Quality Control

Our 3-Cyanobutylmethyldimethoxysilane is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including GC, NMR, and FTIR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are provided and available upon request to support your quality assurance protocols.

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 product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed and under a dry inert atmosphere (e.g., nitrogen) for long-term storage to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.96 - 0.98 g/cm³
Refractive Index (n20/D)	1.420 - 1.430

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