Description

Di-n-Octyldichlorosilane is a high-purity organosilicon compound, specifically a dichlorosilane derivative with two linear octyl groups. This chemical serves as a crucial intermediate and precursor in the synthesis of advanced silicone polymers and surface-modifying agents. It is essential for manufacturers in the specialty chemicals, advanced materials, and electronics sectors who require reliable, high-quality silane reagents for creating hydrophobic coatings, release agents, and tailored silicone elastomers.

Application

• Silicone Polymer Synthesis: A key monomer for producing specific polydimethylsiloxane (PDMS) variants and specialty silicone fluids with long alkyl chains.
• Surface Modification & Hydrophobic Coatings: Used to functionalize silica, glass, and other inorganic surfaces, imparting durable water-repellent (hydrophobic) properties.
• Release Agent Precursor: Serves as a building block for manufacturing high-performance silicone-based release coatings for labels, tapes, and industrial molding.
• Adhesion Promotion: Acts as a coupling agent in composite materials to improve bonding between organic polymers and inorganic fillers.
• Chemical Intermediate: Employed in organic synthesis to introduce the di-n-octylsilyl group into more complex molecules for research and specialty applications.
• Electronics & Semiconductor Processing: Utilized in the deposition of silicon-containing thin films via chemical vapor deposition (CVD) techniques.

Basic Information

Product Name	Di-n-Octyldichlorosilane
CAS No.	18416-07-4
Molecular Formula	C₁₆H₃₄Cl₂Si
Molecular Weight	325.43 g/mol
Synonyms	Dichlorodi-n-octylsilane; Di-n-octyldichlorosilane; Dioctyldichlorosilane; n-Octyldichlorosilane; Dichloro(dioctyl)silane; Silane, dichlorodioctyl-; Dioctylsilyl dichloride
EINECS	242-292-6

Quality Control

Our Di-n-Octyldichlorosilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including GC and NMR, to ensure high chemical purity and consistency. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is 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, well-ventilated area away from heat and incompatible materials. Due to its moisture-sensitive (hygroscopic) and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and degradation. Recommended storage temperature: 2°C to 8°C (refrigerated).

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Chloride Content	21.5 - 22.5 %
Density at 20°C	0.92 - 0.96 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.