Description

Diallyldichlorosilane is a versatile organosilicon compound that serves as a key reactive intermediate in the synthesis of advanced silicone polymers and functional materials. Its bifunctional structure, featuring two alkenyl groups and two reactive chlorine atoms, makes it a critical building block for introducing cross-linkable sites and modifying material properties. This chemical is essential for manufacturers in the silicone elastomer, resin, and specialty coatings industries seeking to enhance product performance, durability, and thermal stability.

Application

• Silicone Polymer Synthesis: A fundamental monomer for producing cross-linked silicone resins and elastomers with improved mechanical strength.
• Adhesives & Sealants: Used as a cross-linking agent to formulate high-performance, heat-resistant adhesives and sealants for automotive and aerospace applications.
• Specialty Coatings: Imparts water repellency, chemical resistance, and thermal stability to protective coatings for electronics and industrial components.
• Release Agents: Serves as a precursor in the manufacture of silicone-based release coatings for labels, tapes, and molding processes.
• Rubber Modification: Acts as a coupling or modifying agent to enhance the properties of synthetic rubbers and composite materials.
• Pharmaceutical Intermediates: Employed in the synthesis of specialized organosilicon compounds for pharmaceutical research and development.
• Electronics Encapsulation: Used in precursors for silicone gels and encapsulants that protect sensitive electronic components from moisture and stress.

Basic Information

Product Name	Diallyldichlorosilane
CAS No.	3651-23-8
Molecular Formula	C6H10Cl2Si
Molecular Weight	169.13 g/mol
Synonyms	Diallyldichlorosilane; Dichlorodiallylsilane; Silane, dichlorodiallyl-; Diallylsilylene dichloride; 1,1-Dichloro-2,5-dihydrosilole; (Allyl)2SiCl2; Bis(2-propenyl)dichlorosilane; 2,5-Dihydro-1,1-dichlorosilole
EINECS	222-889-5

Quality Control

Our Diallyldichlorosilane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including gas chromatography (GC) for assay and impurity profiling, to meet exacting customer specifications. A Certificate of Analysis (COA) detailing purity, identity, and physical properties 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 ignition sources. Due to its moisture-sensitive (hygroscopic) 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. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Density (at 20°C)	1.07 - 1.09 g/mL
Refractive Index (n20D)	1.460 - 1.465
Water Content (Karl Fischer)	≤ 0.1%

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