Description

1,1,5,5-Tetraphenyltetramethyltrisiloxane is a high-purity organosilicon compound characterized by its unique molecular architecture. This specialty siloxane is valued for its role as a versatile building block and intermediate in advanced material synthesis. It is primarily sought after by R&D laboratories and manufacturers in the silicone polymer, electronics, and specialty chemical industries for developing materials with tailored thermal and mechanical properties.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linking agent to introduce phenyl groups, enhancing the thermal stability, refractive index, and radiation resistance of silicone resins and elastomers.
• Advanced Material Synthesis: Serves as a key precursor or intermediate in the synthesis of novel siloxane-based dendrimers, cages, and hybrid organic-inorganic materials.
• Electronics & Optoelectronics: Used in the development of encapsulants, adhesives, or coatings for electronic components where high thermal endurance and specific optical properties are required.
• Research & Development: A critical reagent in academic and industrial R&D for exploring new organosilicon chemistry, catalysis, and material science applications.
• Surface Treatment & Additives: Potential use in formulating surface modifiers or additives to impart specific release, lubrication, or hydrophobic characteristics.

Basic Information

Product Name	1,1,5,5-Tetraphenyltetramethyltrisiloxane
CAS No.	3982-82-9
Molecular Formula	C34H38O2Si3
Molecular Weight	563.0 g/mol
Synonyms	Tetraphenyltetramethyltrisiloxane; 1,1,5,5-Tetraphenyl-1,3,5-trimethyltrisiloxane; Trisiloxane, 1,1,5,5-tetraphenyl-1,3,5-trimethyl-; 1,3,5-Trimethyl-1,1,5,5-tetraphenyltrisiloxane; 1,1,5,5-Tetraphenyl-1,3,5-trimethylcyclotrisiloxane (related cyclic form); Phenylmethylsiloxane trimer; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Every batch of 1,1,5,5-Tetraphenyltetramethyltrisiloxane is manufactured and tested under a strict quality management system. We ensure product integrity through comprehensive analytical techniques including NMR, HPLC, and GC to verify identity, purity, and consistency. A Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to guarantee it meets your precise research or production requirements.

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, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC/GC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%

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