Description

1,2-Dichlorotetramethyldisilane is a versatile organosilicon compound that serves as a critical building block in advanced material synthesis. Its value lies in its bifunctional chlorosilane structure, enabling precise chemical modifications and serving as a key precursor for silicon-based polymers and surface treatments. This high-purity intermediate is essential for R&D and production in the semiconductor, specialty polymer, and pharmaceutical industries, where controlled silane chemistry is paramount.

Application

• Semiconductor Manufacturing: As a precursor for chemical vapor deposition (CVD) and atomic layer deposition (ALD) processes to create silicon-containing thin films and dielectric layers.
• Silicone Polymer Synthesis: A key monomer or cross-linking agent in the production of specialized polysiloxanes and silicone resins with tailored properties.
• Surface Modification & Coupling Agents: Used to functionalize inorganic surfaces (e.g., silica, glass) with organic groups, improving adhesion and compatibility in composite materials.
• Organic Synthesis Intermediate: Employed in pharmaceutical and agrochemical research for introducing silicon moieties into complex molecules via Si-C bond formation.
• Hydrosilylation Catalyst Systems: Acts as a component or precursor in catalyst systems for hydrosilylation reactions, a fundamental process in silicone chemistry.
• Specialty Adhesives & Sealants: Imparts specific reactivity and stability characteristics in high-performance silicone-based formulations.

Basic Information

Product Name	1,2-Dichlorotetramethyldisilane
CAS No.	39437-99-5
Molecular Formula	C4H12Cl2Si2
Molecular Weight	187.21 g/mol
Synonyms	1,2-Dichloro-1,1,2,2-tetramethyldisilane; Tetramethyl-1,2-dichlorodisilane; Dichlorotetramethyldisilane; 1,2-Dichlorotetramethyldisilane; TMDS-Cl2; 1,1,2,2-Tetramethyl-1,2-dichlorodisilane; Bis(chlorodimethylsilyl); Disilane, 1,2-dichloro-1,1,2,2-tetramethyl-
EINECS	Contact for details

Quality Control

Our 1,2-Dichlorotetramethyldisilane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, NMR, and Karl Fischer titration to confirm identity, potency, and impurity profiles. Certificates of Analysis (COA) detailing all specifications are 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 at 15-25°C. Due to its hygroscopic (moisture-sensitive) nature, containers must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis. Keep away from strong acids and incompatible 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%

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