Description

1,1,3,3-Tetrachloro-1,3-Dimethyldisiloxane is a versatile organosilicon intermediate characterized by its reactive chlorosilane groups. This compound is essential for the synthesis of a wide range of silicone polymers and functional siloxanes, serving as a key building block in advanced material science. It is primarily utilized by manufacturers in the silicone industry, electronics sector, and specialty chemical research for creating tailored materials with specific properties.

Application

• Silicone Polymer Synthesis: A fundamental monomer for the production of linear and branched polysiloxanes, including polydimethylsiloxanes (PDMS).
• Surface Modification Agent: Used to impart hydrophobic or specific functional properties to inorganic surfaces like glass, silica, and metals.
• Coupling Agent/Crosslinker: Acts as a reactive intermediate in the formulation of adhesives, sealants, and coatings to enhance bonding and durability.
• Electronics & Semiconductor Industry: Employed in the synthesis of precursors for silicon carbide (SiC) or silicon nitride (Si3N4) coatings and dielectric materials.
• Pharmaceutical & Agro-Intermediate: Serves as a starting material for synthesizing more complex organosilicon compounds with biological activity.
• Laboratory Research & Development: A valuable reagent for academic and industrial R&D in organometallic and polymer chemistry.

Basic Information

Product Name	1,1,3,3-Tetrachloro-1,3-Dimethyldisiloxane
CAS No.	4617-27-0
Molecular Formula	C2H6Cl4OSi2
Molecular Weight	232.0 g/mol
Synonyms	Bis(chlorodimethylsilyl) ether; Dichlorodimethylsiloxane (dimer); 1,3-Dichloro-1,1,3,3-tetramethyldisiloxane (incorrect but common); Tetrachlorodimethyldisiloxane; DCDMS; Chlorodimethylsiloxane dimer; Dimethyldichlorodisiloxane; Hexachlorodisiloxane, dimethyl-
EINECS	225-036-1

Quality Control

Our 1,1,3,3-Tetrachloro-1,3-Dimethyldisiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee compliance with your technical requirements.

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 and 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 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	~1.25 g/cm³
Refractive Index (n20D)	~1.420 - 1.430
Chloride Content	~60 - 62%

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