Description

Cyclotetramethylenedichlorosilane is a specialized organosilicon compound with the CAS number 2406-33-9, serving as a key intermediate in advanced material synthesis. Its value lies in its reactive dichlorosilane functionality, which enables precise molecular engineering for high-performance polymers and coatings. This chemical is essential for R&D and production teams in the semiconductor, specialty polymer, and advanced materials industries seeking to develop novel silicone-based products.

Application

• Precursor for Cyclic Siloxane Polymers: Acts as a fundamental building block in the synthesis of polyhedral oligomeric silsesquioxanes (POSS) and other cyclic siloxane structures for high-temperature resins.
• Surface Modification Agent: Used to create hydrophobic or specific functional coatings on glass, silica, and metal oxides to alter surface properties.
• Semiconductor Fabrication: Employed in chemical vapor deposition (CVD) processes as a silicon source for depositing thin films and silicon carbide-based materials.
• Crosslinking Agent: Facilitates the formation of three-dimensional networks in silicone elastomers and resins, enhancing thermal and mechanical stability.
• Synthesis of Silane Coupling Agents: Serves as an intermediate for manufacturing specialized silanes that improve adhesion between organic polymers and inorganic substrates.
• Advanced Material Research: Utilized in laboratories for developing novel hybrid organic-inorganic materials with tailored optical, electronic, or mechanical properties.

Basic Information

Product Name	Cyclotetramethylenedichlorosilane
CAS No.	2406-33-9
Molecular Formula	C4H8Cl2Si
Molecular Weight	155.10 g/mol
Synonyms	1,1-Dichloro-1-silacyclopentane; Dichlorosilacyclopentane; 1,1-Dichlorosilacyclopentane; Silacyclopentane, 1,1-dichloro-; 1,1-Dichloro-1-silacyclopentane; Dichloro(silacyclopentane); Cyclotetramethylene dichlorosilane
EINECS	219-300-5

Quality Control

Our Cyclotetramethylenedichlorosilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, assay, 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, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Chloride Content	Contact for details
Density (20°C)	~1.18 g/cm³

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