Description

1,1,3,3-Tetramethyltetraphenylcyclotetrasiloxane is a high-purity organosilicon compound belonging to the cyclotetrasiloxane class, valued for its unique phenyl-substituted cyclic structure. This compound serves as a critical intermediate and functional additive, offering enhanced thermal stability and compatibility in advanced material formulations. It is primarily sought by manufacturers in the silicone polymer, specialty resin, and advanced electronics industries for developing high-performance materials.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linking agent to incorporate phenyl groups, improving the heat resistance, refractive index, and radiation stability of silicone rubbers and resins.
• High-Temperature Resins: Used as a precursor or additive in the synthesis of phenyl-containing silicone resins for protective coatings, encapsulants, and composites requiring superior thermal performance.
• Electronic Packaging Materials: Employed in formulations for semiconductor encapsulants and underfill materials where low stress, high purity, and reliable performance under thermal cycling are critical.
• Specialty Release Agents & Lubricants: Serves as a base or additive for high-performance lubricants and mold release agents that must function effectively at elevated temperatures.
• Optical Silicones: Contributes to the development of silicone gels and lenses with specific refractive indices and clarity for optical and LED applications.
• Research & Development: A valuable building block in organic and organometallic chemistry research for synthesizing novel siloxane-based architectures and dendrimers.

Basic Information

Product Name	1,1,3,3-Tetramethyltetraphenylcyclotetrasiloxane
CAS No.	1693-47-6
Molecular Formula	C28H32O4Si4
Molecular Weight	537.0 g/mol
Synonyms	2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane; Tetraphenyltetramethylcyclotetrasiloxane; Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-; 1,3,5,7-Tetramethyl-1,3,5,7-tetraphenylcyclotetrasiloxane; Phenylmethylcyclotetrasiloxane; DPh2DMe2 (in siloxane notation); Tetramethyltetraphenylcyclotetrasiloxane
EINECS	Contact for details

Quality Control

Our 1,1,3,3-Tetramethyltetraphenylcyclotetrasiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including chromatographic purity assays and structural confirmation, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) detailing all quality parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids, strong bases, and oxidizing agents. The container must be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC/GC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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