Description

1,3-Dichlorotetraphenyldisiloxane is a versatile organosilicon intermediate characterized by its reactive chlorosilane groups and thermally stable disiloxane backbone. This compound matters for its role as a key building block in the synthesis of advanced silicone polymers and functional materials, offering precise control over molecular architecture. It is primarily needed by manufacturers in the silicone elastomer, specialty resin, and advanced material coating industries seeking to enhance thermal stability and introduce specific functionalities.

Application

• Silicone Polymer Synthesis: Serves as a critical monomer or chain extender for producing high-performance polysiloxanes with phenyl groups for enhanced thermal and oxidative stability.
• Hybrid Material Fabrication: Used in the preparation of silicone-epoxy, silicone-polyimide, or other organic-inorganic hybrid resins for electronics and aerospace composites.
• Surface Modification Agent: Functions as a coupling agent or surface treatment chemical to modify the properties of inorganic fillers like silica or glass fibers for improved composite performance.
• Pharmaceutical & Agrochemical Intermediates: Employed in the synthesis of specialized organosilicon compounds with potential biological activity or as protecting groups in complex organic synthesis.
• Adhesive & Sealant Formulations: Imparts specific rheological and durability properties to high-temperature resistant adhesives and sealants.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new silicone-based materials, dendrimers, and nanostructures.

Basic Information

Product Name	1,3-Dichlorotetraphenyldisiloxane
CAS No.	7756-87-8
Molecular Formula	C24H20Cl2OSi2
Molecular Weight	447.49 g/mol
Synonyms	Bis(chlorodiphenylsiloxy)dimethylsilane (incorrect but common); Tetraphenyldichlorodisiloxane; 1,3-Dichloro-1,1,3,3-tetraphenyldisiloxane; Dichlorotetraphenyldisiloxane; Diphenylsilanediol dichloride dimer; Disiloxane, 1,3-dichloro-1,1,3,3-tetraphenyl-; NSC 164019
EINECS	231-819-3

Quality Control

Our 1,3-Dichlorotetraphenyldisiloxane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by titration or chromatography and identification by spectroscopic methods (IR, NMR), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or lumps
Identification (IR)	Conforms to structure
Assay (GC or Titration)	≥ 97.0%
Melting Point	Contact for details
Chloride Content	Contact for details
Related Substances (HPLC/GC)	Contact for details

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