Description

1,5-Bis(Glycidoxypropyl)-3-Phenyl-1,1,3,5,5-Pentamethyltrisiloxane is a high-purity, multi-functional organosilicon compound featuring both epoxy and siloxane groups. This unique molecular structure provides exceptional versatility as a reactive intermediate or cross-linking agent in advanced material synthesis. It is primarily sought after by formulators and researchers in the coatings, adhesives, and specialty polymer industries seeking to enhance thermal stability, adhesion, and flexibility in their final products.

Application

• Epoxy Resin Modification: Acts as a reactive flexibilizer and adhesion promoter in epoxy-based coatings, sealants, and composite matrices.
• Silicone Hybrid Polymers: Serves as a key monomer for synthesizing silicone-epoxy hybrid resins with improved mechanical and thermal properties.
• Adhesive & Sealant Formulations: Enhances the bonding strength, weatherability, and chemical resistance of high-performance adhesives.
• Electronic Encapsulants: Used in potting and encapsulation compounds to protect sensitive electronic components from moisture and stress.
• Fiber Optic Coatings: Imparts necessary protective and mechanical properties to primary and secondary coatings for optical fibers.
• Surface Treatment Agent: Provides a coupling effect to improve the interface between organic polymers and inorganic substrates like glass or metals.

Basic Information

Product Name	1,5-Bis(Glycidoxypropyl)-3-Phenyl-1,1,3,5,5-Pentamethyltrisiloxane
CAS No.	865811-59-2
Molecular Formula	C24H42O6Si3
Molecular Weight	510.86 g/mol
Synonyms	1,3,5-Trisiloxane, 1,5-bis[3-(2,3-epoxypropoxy)propyl]-3-phenyl-1,1,3,5,5-pentamethyl-; 3-Phenyl-1,1,3,5,5-pentamethyl-1,5-bis(3-glycidoxypropyl)trisiloxane; Glycidoxypropyl Phenyl Methyl Trisiloxane; Epoxy-functional trisiloxane; Silane, bis[(3-(2,3-epoxypropoxy)propyl]phenylmethylsiloxy-terminated; A 187 derivative (trade name related); Epoxy-modified Phenyltrisiloxane
EINECS	Contact for details

Quality Control

Our production of 1,5-Bis(Glycidoxypropyl)-3-Phenyl-1,1,3,5,5-Pentamethyltrisiloxane adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay, epoxy value determination, and impurity profiling, to ensure consistency and high purity. Certificates of Analysis (COA) documenting all critical specifications are provided to guarantee the material meets your precise formulation 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). Keep away from strong bases and incompatible materials such as strong oxidizing agents. Under recommended storage conditions, the product is stable for extended periods.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 95.0%
Epoxy Value	Contact for details
Refractive Index (n20D)	~1.460 - 1.470
Density (g/mL at 20°C)	~1.05 - 1.10
Viscosity (cSt at 25°C)	Contact for details

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