Description

3-Cyanopropyltrichlorosilane is a versatile organosilicon compound that serves as a critical coupling agent and surface modifier. Its molecular structure, featuring both a reactive trichlorosilyl group and a cyano-functional propyl chain, enables it to form durable bonds between inorganic substrates and organic polymers or coatings. This bifunctional reactivity makes it essential for manufacturers in the electronics, composite materials, and specialty chemical industries seeking to enhance material performance and adhesion.

Application

• Surface Modification Agent: Used to functionalize glass, silica, metals, and other inorganic surfaces to improve adhesion and compatibility with organic resins, paints, and adhesives.
• Silane Coupling Agent: Acts as a molecular bridge in fiberglass-reinforced plastics, mineral-filled composites, and tire manufacturing to strengthen the interface between filler and polymer matrix.
• Intermediate for Specialty Silicones: A key precursor in the synthesis of advanced silicone polymers, resins, and fluids with tailored properties for high-performance applications.
• Chromatography Stationary Phases: Employed to derivatize silica gel for the preparation of HPLC and GC columns, particularly for separating polar compounds.
• Adhesion Promoter in Electronics: Enhances the bonding of encapsulants, underfills, and conformal coatings to semiconductor chips and circuit boards.
• Nanomaterial Functionalization: Used to modify nanoparticles (e.g., silica, quantum dots) to impart specific surface chemistry for dispersion in non-polar media or further chemical reactions.

Basic Information

Product Name	3-Cyanopropyltrichlorosilane
CAS No.	1071-27-8
Molecular Formula	C4H6Cl3NSi
Molecular Weight	202.54 g/mol
Synonyms	3-Cyanopropyltrichlorosilane; (3-Cyanopropyl)trichlorosilane; Trichloro(3-cyanopropyl)silane; γ-Cyanopropyltrichlorosilane; NSC 93766; Silane, trichloro(3-cyanopropyl)-; 3-(Trichlorosilyl)propionitrile; Cyanopropyltrichlorosilane
EINECS	213-991-4

Quality Control

Our 3-Cyanopropyltrichlorosilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) and FTIR spectroscopy, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment 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 compound is hygroscopic (moisture-sensitive) and highly volatile. Containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, acids, and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 25°C)	1.26 - 1.30 g/mL
Refractive Index (n20/D)	1.460 - 1.470
Chloride Content	≥ 51.0%

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