Description

1,1,3,5,5-Pentaphenyl-1,3,5-Trimethyltrisiloxane is a high-purity organosilicon compound characterized by its unique phenyl-substituted trisiloxane structure. This compound serves as a valuable intermediate and functional additive, offering enhanced thermal stability and compatibility in advanced material formulations. It is primarily utilized by R&D laboratories and manufacturers in the silicone polymer, specialty chemical, and advanced materials sectors for developing products with tailored properties.

Application

• Key intermediate in the synthesis of specialty phenyl-modified silicone oils and resins.
• Building block for advanced silicone-based materials requiring high thermal and oxidative stability.
• Potential cross-linking agent or chain extender in the development of high-performance elastomers.
• Functional additive in coatings and encapsulants to modify rheological and surface properties.
• Research chemical for developing novel organosilicon architectures and hybrid materials.
• Precursor for silane coupling agents with specific phenyl functionality for surface modification.

Basic Information

Product Name	1,1,3,5,5-Pentaphenyl-1,3,5-Trimethyltrisiloxane
CAS No.	3390-61-2
Molecular Formula	C39H38O2Si3
Molecular Weight	611.0 g/mol
Synonyms	Pentaphenyltrimethyltrisiloxane; 1,1,3,5,5-Pentaphenyl-1,3,5-trimethylcyclotrisiloxane; Trisiloxane, 1,1,3,5,5-pentaphenyl-1,3,5-trimethyl-; 1,3,5-Trimethyl-1,3,5-triphenyl-1,3,5-trisiloxane (common misnomer); Phenylmethylsiloxane cyclic trimer derivative; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our 1,1,3,5,5-Pentaphenyl-1,3,5-Trimethyltrisiloxane is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatographic purity analysis and structural confirmation, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing specific 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). Due to its hygroscopic nature, containers must be kept tightly sealed after opening to prevent moisture absorption, which may affect product stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC/GC)	≥ 95.0%
Melting Point	Contact for details

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