Description

2-Cyanoethylmethylsiloxane is a specialized organosilicon compound featuring cyanoethyl and methyl groups attached to a siloxane backbone. This unique structure provides a combination of polarity, reactivity, and silicone-like properties, making it a valuable intermediate for advanced material synthesis. It is primarily sought after by R&D chemists and process engineers in the silicone polymer, specialty coatings, and electronics industries for developing materials with tailored surface characteristics and adhesion properties.

Application

• Silicone Polymer Modification: Acts as a functional monomer or cross-linker to introduce polar cyano groups into polysiloxane chains, enhancing compatibility with organic polymers and improving adhesion to various substrates.
• Specialty Coatings & Adhesives: Used in formulating high-performance coatings, pressure-sensitive adhesives (PSAs), and sealants where improved surface wetting, dielectric properties, and chemical resistance are required.
• Electronic Encapsulants & Potting Compounds: Serves as a key ingredient in silicone gels and encapsulants for electronic components, contributing to desirable dielectric constant and thermal stability.
• Surface Treatment Agent: Employed to modify the surface properties of fillers (like silica) or fabrics to improve dispersion in silicone matrices or impart specific functional characteristics.
• Intermediate for Further Synthesis: The reactive cyanoethyl group can be hydrolyzed or reduced, making it a versatile building block for synthesizing other functional silanes and siloxanes.

Basic Information

Product Name	2-Cyanoethylmethylsiloxane
CAS No.	70775-91-6
Molecular Formula	C5H11NOSi (for monomer unit)
Molecular Weight	129.23 g/mol (monomer)
Synonyms	Methyl(2-cyanoethyl)siloxane; Poly[methyl(2-cyanoethyl)siloxane]; Cyanoethylmethylsiloxane polymer; 2-Cyanoethyl methyl siloxane; Siloxanes and Silicones, 2-cyanoethyl methyl; Cyanopropylmethylsiloxane (related); CAS 70775-91-6
EINECS	Contact for details

Quality Control

Every batch of 2-Cyanoethylmethylsiloxane is manufactured and tested under a strict quality management system. We ensure consistency in key parameters such as viscosity, cyanoethyl content, and molecular weight distribution to meet precise application requirements. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and physical specifications is provided with each shipment 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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Specified range (cSt)
Cyanoethyl Content	Specified range (wt%)
Water Content	≤ 0.1% (Karl Fischer)
Refractive Index (n20D)	Specified range

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