Description

3,3-Diphenylhexamethyltrisiloxane is a specialized organosilicon compound belonging to the class of phenyl-modified siloxanes. This chemical is valued for its unique combination of phenyl group stability and siloxane chain flexibility, making it a versatile intermediate and performance additive. It is primarily utilized by manufacturers in the silicone polymers, personal care, and specialty lubricants industries seeking to modify rheology, enhance thermal stability, or impart specific surface properties to their formulations.

Application

• Silicone Intermediate: A key building block for synthesizing phenyl-containing silicone oils, resins, and elastomers.
• Personal Care & Cosmetics: Used as an emollient and conditioning agent in high-end skincare and haircare products for its smooth, non-greasy feel.
• Lubricants & Greases: Serves as a base fluid or additive in high-temperature and radiation-resistant specialty lubricants.
• Release Agents: Employed in molding and casting processes where excellent release properties and thermal stability are required.
• Dielectric Fluids: A potential component in heat transfer and insulating fluids for electrical applications.
• Surface Modification: Acts as a surface treatment agent to impart water repellency and alter surface energy.

Basic Information

Product Name	3,3-Diphenylhexamethyltrisiloxane
CAS No.	797-77-3
Molecular Formula	C18H30O2Si3
Molecular Weight	374.70 g/mol
Synonyms	1,1,1,5,5,5-Hexamethyl-3,3-diphenyltrisiloxane; Trisiloxane, 1,1,1,5,5,5-hexamethyl-3,3-diphenyl-; MD'M (where D' = diphenylsiloxane unit); Phenyl Modified Trisiloxane; Diphenylhexamethyltrisiloxane; Bis(phenyl)hexamethyltrisiloxane
EINECS	212-355-0

Quality Control

Our 3,3-Diphenylhexamethyltrisiloxane is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistent performance. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is provided with every shipment to guarantee compliance with your specifications.

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 oxidizing agents and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.480 - 1.490
Density (25°C)	0.98 - 1.02 g/mL

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