Description

1,1'-(Dimethoxysilylene)Biscyclohexane is a specialized organosilicon compound, also known as bis(cyclohexyl)dimethoxysilane, with the CAS number 18551-20-7. This chemical serves as a high-performance coupling agent and surface modifier, critical for enhancing the compatibility and adhesion between organic polymers and inorganic materials. It is essential for manufacturers in the advanced materials, specialty coatings, and polymer industries seeking to improve product durability and performance.

Application

• Silane Coupling Agent: Used to modify silica, glass fibers, and other mineral fillers to improve their dispersion and bonding within polymer matrices like rubbers, plastics, and composites.
• Surface Treatment: Applied as a hydrophobic coating on pigments, nanoparticles, and metal surfaces to enhance moisture resistance and stability.
• Adhesion Promoter: Incorporated into primers, sealants, and adhesive formulations to significantly improve bond strength to challenging substrates such as metals, glass, and concrete.
• Crosslinking Agent/Co-monomer: Utilized in the synthesis of specialty silicones, silsesquioxanes, and hybrid organic-inorganic polymers (ORMOSILs) for tailored material properties.
• Rubber & Tire Industry: Enhances the reinforcement of silica-filled rubber compounds, leading to improved rolling resistance, wear, and wet traction in high-performance tires.
• Electronics & Optics: Serves as a precursor for thin films and protective coatings in microelectronics and optical devices due to its ability to form stable siloxane networks.

Basic Information

Product Name	1,1'-(Dimethoxysilylene)Biscyclohexane
CAS No.	18551-20-7
Molecular Formula	C14H28O2Si
Molecular Weight	256.46 g/mol
Synonyms	Bis(cyclohexyl)dimethoxysilane; Dicyclohexyldimethoxysilane; Cyclohexyl(dimethoxy)silane; Dimethoxydicyclohexylsilane; (Dimethoxysilylene)biscyclohexane; 1,1'-(Dimethylsilylene)biscyclohexane (common misnomer); Silane, dimethoxydicyclohexyl-; Dicyclohexylsilanediol dimethyl ether
EINECS	242-424-4

Quality Control

Our production of 1,1'-(Dimethoxysilylene)Biscyclohexane adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with each shipment to guarantee 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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening 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%
Water Content (KF)	≤ 0.1%
Refractive Index (n20/D)	1.470 - 1.480
Density (20°C)	0.98 - 1.02 g/mL

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