Description

Dichlorodioctadecylsilane is a high-purity organosilicon compound, specifically a long-chain dialkylchlorosilane. This chemical is a critical intermediate and surface modifying agent, valued for its ability to impart hydrophobic properties to various substrates. It is essential for manufacturers and R&D teams in the advanced materials, specialty chemicals, and nanotechnology sectors seeking to modify surface energy and reactivity.

Application

• Surface Modification Agent: Used to create hydrophobic, oleophobic, or release coatings on glass, silica, metals, and polymers.
• Silane Coupling Agent: Acts as a primer or adhesion promoter in composite materials, enhancing the bond between organic polymers and inorganic surfaces.
• Intermediate for Silicone Chemistry: Serves as a key precursor in the synthesis of more complex silicone oils, resins, and functionalized silanes.
• Nanomaterial Functionalization: Employed to modify the surface of nanoparticles (e.g., silica, quantum dots) to improve dispersion in organic matrices or to attach further functional groups.
• Water Repellent Treatments: Formulated into treatments for textiles, construction materials, and paper to provide water resistance.
• Research & Development: Utilized in academic and industrial labs for developing new materials with tailored surface properties.

Basic Information

Product Name	Dichlorodioctadecylsilane
CAS No.	67494-12-6
Molecular Formula	C36H74Cl2Si
Molecular Weight	606.0 g/mol
Synonyms	Dioctadecyldichlorosilane; Di-n-octadecyldichlorosilane; Dichlorodi-n-octadecylsilane; Dichlorodistearylsilane; Stearyltrichlorosilane (related); Octadecyltrichlorosilane (related); C18-silane; Long-chain alkylchlorosilane
EINECS	Contact for details

Quality Control

Our Dichlorodioctadecylsilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay (GC/HPLC), identity confirmation (IR, NMR), and impurity profiling, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are provided with every 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). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white waxy solid or flakes
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Chloride Content	Theoretical
Melting Point	Contact for details

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