Description

Docosylmethyldichlorosilane is a high-purity organosilicon compound, specifically a long-chain alkylchlorosilane, valued for its role as a key intermediate in silicone chemistry. Its primary commercial importance lies in its ability to introduce hydrophobic, long-chain alkyl groups into siloxane polymers and surfaces, significantly modifying their properties. This product is essential for manufacturers in the specialty chemicals, advanced materials, and surface treatment industries seeking to develop water-repellent coatings, release agents, and tailored silicone fluids.

Application

• Hydrophobic Surface Modifier: Used to treat glass, silica, and other inorganic materials to impart exceptional water repellency and anti-fog properties.
• Silicone Polymer Intermediate: Serves as a crucial monomer or co-monomer for synthesizing specialty methylalkylsiloxane polymers and fluids with unique rheological and surface-active characteristics.
• Release Agent Precursor: A key raw material in formulating high-performance silicone-based release coatings for pressure-sensitive adhesives and industrial molding.
• Coupling Agent: Acts as a molecular bridge to improve adhesion between organic polymers and inorganic fillers or substrates in composite materials.
• Nanomaterial Functionalization: Employed to graft long alkyl chains onto nanoparticles (e.g., silica, metals) to enhance dispersion in organic matrices and prevent aggregation.
• Lubricant Additive: Incorporated into specialty lubricants and greases to improve film strength, reduce friction, and provide corrosion protection.

Basic Information

Item	Detail
Product Name	Docosylmethyldichlorosilane
CAS No.	67892-56-2
Molecular Formula	C₂₃H₄₈Cl₂Si
Molecular Weight	423.62 g/mol
Synonyms	Dichloromethylbehenylsilane; Dichloromethyl(docosyl)silane; Behenyldichloromethylsilane; 1-Docosyldichloromethylsilane; Methylbehenyldichlorosilane; Methyl(docosyl)dichlorosilane; Docosylmethyldichlorosilane; C22-Alkylmethyldichlorosilane
EINECS	Contact for details

Quality Control

Our Docosylmethyldichlorosilane is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay by GC or titration and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, ensuring full traceability and compliance with your material specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and incompatible materials. Due to its hygroscopic and moisture-sensitive nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis. Recommended storage temperature: 2°C to 8°C (refrigerated) for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Chloride Content	16.5 - 17.5 %
Density (at 20°C)	0.88 - 0.92 g/mL
Refractive Index (n20D)	1.450 - 1.460

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