Description

Hexaphenylcyclotrisiloxane is a high-purity organosilicon compound belonging to the cyclosiloxane family. This specialty chemical serves as a critical building block and intermediate in the synthesis of advanced silicone polymers and functional materials. It is essential for R&D and production in industries requiring materials with specific thermal, optical, or surface properties. Global manufacturers and research institutions rely on this compound for its consistent quality and structural precision.

Application

• Silicone Polymer Synthesis: Key monomer for producing high-performance phenyl-containing silicone resins, elastomers, and fluids with enhanced thermal stability and refractive index.
• Advanced Material Research: Precursor for developing novel hybrid organic-inorganic materials, including silsesquioxanes (POSS) and other cage-structured compounds.
• Optoelectronics & Photonics: Used in the formulation of silicone-based encapsulants, waveguides, and lenses where high optical clarity and thermal resistance are required.
• High-Temperature Coatings: A component in silicone-based protective coatings and paints designed for extreme temperature environments.
• Adhesives & Sealants: Imparts flexibility and heat resistance to specialty silicone adhesives and sealants used in aerospace and automotive applications.
• Pharmaceutical & Cosmetic Intermediates: Serves as an intermediate in the synthesis of specific siloxane-based ingredients.

Basic Information

Product Name	Hexaphenylcyclotrisiloxane
CAS No.	512-63-0
Molecular Formula	C36H30O3Si3
Molecular Weight	594.88 g/mol
Synonyms	2,2,4,4,6,6-Hexaphenyl-1,3,5,2,4,6-trioxatrisilinane; Cyclotrisiloxane, hexaphenyl-; 1,3,5-Triphenyl-1,3,5-triphenylcyclotrisiloxane; Hexaphenylcyclotrisiloxane; Phenyl T3; D3Ph; 1,3,5,2,4,6-Trioxatrisilinane, 2,2,4,4,6,6-hexaphenyl-
EINECS	208-148-5

Quality Control

Our Hexaphenylcyclotrisiloxane is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure high purity and structural integrity. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications. We support custom synthesis and purity requirements for specific research and industrial applications.

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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and potential hydrolysis.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	185 - 195 °C
Loss on Drying	≤ 0.5%

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