Description

Octyltrichlorosilane is a versatile organosilicon compound, specifically an alkyltrichlorosilane, that serves as a critical intermediate in the synthesis of functional silanes and silicone polymers. Its primary commercial value lies in its ability to act as a coupling agent and surface modifier, imparting hydrophobic properties and improving adhesion between organic and inorganic materials. This makes it essential for manufacturers in the coatings, adhesives, and specialty chemical industries seeking to enhance product performance and durability.

Application

• Surface Treatment Agent: Used to modify the surface of glass, silica, and metals to create hydrophobic, oleophobic, or release layers.
• Coupling Agent in Composites: Improves the interfacial adhesion between mineral fillers (e.g., silica) and polymer matrices in composite materials.
• Intermediate for Silicone Synthesis: A key precursor for manufacturing specialized silicone oils, resins, and elastomers with specific alkyl chain properties.
• Water Repellent Coatings: Formulated into coatings for construction materials, textiles, and electronics to provide moisture resistance.
• Adhesion Promoter: Enhances the bonding of primers, sealants, and adhesives to difficult substrates.
• Chemical Grafting: Employed in research and development for attaching organic functionalities to silicon-based surfaces.

Basic Information

Product Name	Octyltrichlorosilane
CAS No.	5283-66-9
Molecular Formula	C8H17Cl3Si
Molecular Weight	247.66 g/mol
Synonyms	n-Octyltrichlorosilane; Trichlorooctylsilane; Octylsilicon trichloride; 1-Octyltrichlorosilane; Silane, trichlorooctyl-; OTS; Capryltrichlorosilane
EINECS	226-104-7

Quality Control

Our Octyltrichlorosilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with every shipment to guarantee consistency and support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 25°C)	1.07 - 1.09 g/mL
Refractive Index (n20/D)	1.450 - 1.455

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