Description

Hexachlorodisiloxane is a highly reactive organosilicon compound primarily used as a key precursor in the synthesis of advanced silicone materials. Its value lies in its ability to introduce chlorine and siloxane linkages, enabling precise control over polymer architecture and surface properties. This chemical is essential for manufacturers in the semiconductor, specialty chemical, and advanced materials industries seeking to develop high-performance coatings, adhesives, and electronic-grade intermediates.

Application

• Semiconductor Manufacturing: As a critical precursor for chemical vapor deposition (CVD) and atomic layer deposition (ALD) processes to create silicon oxide and silicon nitride thin films.
• Silicone Intermediate Synthesis: Serves as a fundamental building block for producing specialized siloxane polymers, resins, and cross-linking agents.
• Surface Modification: Used to impart hydrophobic or specific functional properties to glass, silica, and other inorganic surfaces.
• Specialty Chemical Production: Acts as a starting material for synthesizing other organochlorosilanes and silicon-based reagents.
• Research & Development: Employed in academic and industrial R&D for developing novel silicon-containing compounds and materials.
• Adhesive & Sealant Formulation: A key component in formulating high-temperature resistant and chemically stable silicone adhesives.

Basic Information

Product Name	Hexachlorodisiloxane
CAS No.	14986-21-1
Molecular Formula	Cl6Si2O
Molecular Weight	284.89 g/mol
Synonyms	Disiloxane, hexachloro-; Hexachlorodisiloxane; Dichlorosilyl ether; Bis(trichlorosilyl) ether; 1,1,1,3,3,3-Hexachlorodisiloxane; Trichlorosilyl ether; Silane, trichloro[(trichlorosilyl)oxy]-; Oxybis[trichlorosilane]
EINECS	239-074-6

Quality Control

Our Hexachlorodisiloxane is manufactured under stringent process controls to ensure batch-to-batch consistency and high purity. Quality is verified through a comprehensive suite of analytical techniques including gas chromatography (GC), FT-IR spectroscopy, and titration methods. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each 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 incompatible materials. 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. Recommended storage temperature: 2°C to 8°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Density at 20°C	~1.52 g/cm³
Boiling Point	~137°C
Chloride Content	≥ 74.0%
Water Content (KF)	≤ 0.1%

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