Description

3-Phenylheptamethyltrisiloxane is a specialized organosilicon compound characterized by its phenyl-substituted trisiloxane backbone. This structure provides a unique combination of properties, including thermal stability and compatibility with organic matrices, making it a valuable intermediate and functional additive. It is primarily utilized in the formulation of advanced silicone materials, lubricants, and release agents for demanding industrial applications.

Application

• As a key intermediate in the synthesis of specialty silicone polymers and resins.
• As a functional additive or plasticizer in high-performance silicone elastomers and sealants.
• In the formulation of specialty lubricants and greases for high-temperature or specific chemical environments.
• As a surface treatment agent or component in release coatings for industrial molding processes.
• In research and development for novel organosilicon chemistry and material science applications.
• As a precursor for modifying surface properties in coatings and composites.

Basic Information

Product Name	3-Phenylheptamethyltrisiloxane
CAS No.	546-44-1
Molecular Formula	C13H26O2Si3
Molecular Weight	298.60 g/mol
Synonyms	Heptamethyl-3-phenyltrisiloxane; 1,1,1,3,5,5,5-Heptamethyl-3-phenyltrisiloxane; Trisiloxane, 3-phenylheptamethyl-; Phenylheptamethyltrisiloxane; Phenyl Trisiloxane; MD'M (where D' = C6H5SiO1.5); Silicone fluid intermediate
EINECS	208-907-5

Quality Control

Our 3-Phenylheptamethyltrisiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets precise specifications and consistent performance for industrial applications. A comprehensive Certificate of Analysis (COA) is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20D)	1.430 - 1.440
Density (20°C)	0.92 - 0.96 g/mL

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