Description

1,2-Bis(Dichloromethylsilyl)Ethane CAS NO 3353-69-3 is a specialized organosilicon compound featuring two reactive dichloromethylsilyl groups linked by an ethane bridge. This unique structure makes it a valuable high-purity chemical intermediate for synthesizing advanced silicone polymers and hybrid organic-inorganic materials. It is primarily sought by R&D chemists and process engineers in the silicone, electronics, and advanced materials sectors for creating custom siloxane networks with specific properties.

Application

• Silicone Polymer Synthesis: A key monomer or cross-linking agent for producing specialty silicone resins, elastomers, and high-performance sealants with enhanced thermal and chemical resistance.
• Advanced Material Precursor: Used in sol-gel processes to fabricate hybrid organic-silica coatings, films, and composites for optical, electronic, and protective applications.
• Surface Modification: Serves as a silanization agent to functionalize inorganic surfaces (e.g., glass, metals, silica) with organic chlorosilane groups, improving adhesion and compatibility.
• Pharmaceutical & Agro-Intermediate: Employed in the research and development of novel organosilicon compounds with potential biological activity.
• Adhesive & Sealant Formulation: Imparts specific curing characteristics and durability to high-end industrial adhesives and potting compounds.
• Electronics Encapsulation: A precursor for silicone-based encapsulants and conformal coatings that protect sensitive electronic components from moisture and environmental stress.

Basic Information

Product Name	1,2-Bis(Dichloromethylsilyl)Ethane
CAS No.	3353-69-3
Molecular Formula	C4H8Cl4Si2
Molecular Weight	258.08 g/mol
Synonyms	Ethane-1,2-diylbis(methyldichlorosilane); 1,2-Bis(methyldichlorosilyl)ethane; Dichloro(methyl)[2-[dichloro(methyl)silyl]ethyl]silane; Bis(methyldichlorosilyl)ethane; 1,2-Ethanediylbis(methyldichlorosilane); Methylbis(2-(methyldichlorosilyl)ethyl)silane (isomer); Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our production of 1,2-Bis(Dichloromethylsilyl)Ethane adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for sensitive synthetic applications. Each lot undergoes rigorous analytical testing, including GC, NMR, and titration methods, to verify identity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory needs.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and degradation. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~1.25 g/cm³
Refractive Index (n20D)	~1.460
Chloride Content (Titration)	Contact for details

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