Description

11-Cyanoundecyltrimethoxysilane is a specialized bifunctional organosilane coupling agent, featuring a long alkyl chain terminated with a cyano group and a hydrolyzable trimethoxysilyl group. This unique molecular structure enables it to act as a powerful surface modifier and adhesion promoter, creating durable covalent bonds between inorganic substrates and organic polymers. It is essential for manufacturers in the advanced composites, specialty coatings, and sealants industries seeking to enhance material performance, durability, and interfacial strength.

Application

• As a coupling agent in glass or mineral-filled polymer composites (e.g., nylon, polypropylene) to improve mechanical properties and moisture resistance.
• As a surface primer or additive in paints, inks, and coatings to promote adhesion to difficult substrates like metals, glass, and ceramics.
• For the surface treatment of silica, alumina, and other fillers to improve their dispersion and compatibility in rubber and silicone formulations.
• In the modification of nanoparticles for use in advanced electronic encapsulants and thermally conductive materials.
• As a chemical anchor in silane-based crosslinking systems and moisture-curing sealants.
• For creating functionalized surfaces in chromatography media and for immobilizing biomolecules in diagnostic applications.

Basic Information

Product Name	11-Cyanoundecyltrimethoxysilane
CAS No.	253788-37-3
Molecular Formula	C15H31NO3Si
Molecular Weight	301.50 g/mol
Synonyms	γ-Cyanoundecyltrimethoxysilane; Trimethoxy(11-cyanoundecyl)silane; 11-Cyano-1-undecyltrimethoxysilane; Ureidosilane precursor; Cyanoalkyltrimethoxysilane; Adhesion promoter 253788-37-3; Silane coupling agent CN
EINECS	Contact for details

Quality Control

Our 11-Cyanoundecyltrimethoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or HPLC, identity confirmation (IR, NMR), and purity verification, to ensure it meets precise specifications for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (nitrogen or argon) after opening to prevent degradation by moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Density (20°C)	~0.95 g/mL
Refractive Index (n20D)	~1.435

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