Description

Hexaphenyldisiloxane is a high-purity organosilicon compound with the CAS number 1829-40-9, characterized by its unique structure featuring six phenyl groups. This compound serves as a critical building block and intermediate in advanced material synthesis, offering exceptional thermal stability and chemical resistance. It is primarily sought after by manufacturers in the silicone polymer, specialty chemical, and advanced materials sectors for applications requiring high-performance siloxane linkages and aromatic functionality.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linking agent to enhance the thermal and mechanical properties of high-performance silicone resins and elastomers.
• Specialty Chemical Intermediate: Serves as a key precursor in the synthesis of more complex organosilicon compounds, including silane coupling agents and dendrimers.
• Advanced Material Synthesis: Used in the development of heat-resistant coatings, electronic encapsulants, and composite materials where aromatic siloxane units are required.
• Research & Development: Employed in academic and industrial R&D for studying siloxane chemistry and creating novel organosilicon architectures.
• Pharmaceutical Intermediates: Potential use as a building block in the synthesis of specialized silicon-containing active pharmaceutical ingredients (APIs).
• Adhesive & Sealant Formulations: Incorporated to improve the high-temperature performance and durability of specialty adhesives and sealants.

Basic Information

Product Name	Hexaphenyldisiloxane
CAS No.	1829-40-9
Molecular Formula	C₃₆H₃₀OSi₂
Molecular Weight	534.80 g/mol
Synonyms	1,1,1,3,3,3-Hexaphenyldisiloxane; Bis(triphenylsilyl) ether; Disiloxane, hexaphenyl-; Triphenylsiloxy triphenylsilane; Hexaphenyl disiloxane; Phenylated disiloxane; Oxybis(triphenylsilane)
EINECS	217-383-5

Quality Control

Our Hexaphenyldisiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	220 - 225 °C

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