Description

1,3 Bis[2(3,4 Epoxycyclohex-1-Yl)Ethyl]Tetra-Methyldisiloxane is a high-purity, bifunctional organosilicon compound containing reactive epoxycyclohexyl groups. This specialized chemical is valued for its ability to act as a versatile crosslinking agent and adhesion promoter in advanced polymer systems. It is essential for manufacturers in the electronics, optical, and high-performance coatings industries seeking to enhance material durability, thermal stability, and chemical resistance.

Application

• Advanced Epoxy Resin Formulations: Serves as a reactive diluent and crosslinker to improve flexibility, adhesion, and thermal shock resistance in high-performance composites and encapsulants.
• Optical & Electronic Encapsulation: Used in LED packaging and semiconductor potting compounds due to its excellent transparency, low stress, and reliable performance under thermal cycling.
• Specialty Adhesives & Sealants: Functions as a key adhesion-promoting component, particularly for bonding difficult substrates like metals, glass, and certain plastics.
• UV-Curable Coatings & Inks: Acts as a cationic photoinitiator-reactive monomer, contributing to fast cure speeds, high surface hardness, and superior chemical resistance in finished films.
• Fiber Optic Coatings: Imparts essential protective properties, including low moisture absorption and excellent weatherability, for primary and secondary coatings on optical fibers.
• Silicone Hybrid Materials: Employed to modify and toughen silicone resins, creating materials with tailored mechanical and surface properties for demanding applications.

Basic Information

Product Name	1,3 Bis[2(3,4 Epoxycyclohex-1-Yl)Ethyl]Tetra-Methyldisiloxane
CAS No.	18724-32-8
Molecular Formula	C22H38O4Si2
Molecular Weight	422.71 g/mol
Synonyms	1,3-Bis[2-(3,4-epoxycyclohexyl)ethyl]tetramethyldisiloxane; 1,3-Bis(2-(7-oxabicyclo[4.1.0]hept-3-yl)ethyl)tetramethyldisiloxane; 2,2'-(1,1,3,3-Tetramethyl-1,3-disiloxanediyl)diethyl 3,4-epoxycyclohexanecarboxylate (related ester); Epoxy-functional siloxane; Cycloaliphatic epoxy siloxane; Epoxycyclohexylethyl Tetramethyldisiloxane; Silaplane TM-DGE (trade name type)
EINECS	Contact for details

Quality Control

Our production of 1,3 Bis[2(3,4 Epoxycyclohex-1-Yl)Ethyl]Tetra-Methyldisiloxane adheres to a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including assay, epoxy equivalent weight (EEW) determination, and impurity profiling. Certificates of Analysis (COA) documenting full specifications are provided with every shipment to support your quality assurance protocols.

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). This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve stability and prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 97.0%
Epoxy Equivalent Weight (EEW)	Contact for details
Refractive Index (n20D)	Contact for details
Density (25°C)	~1.02 g/cm³
Viscosity (25°C)	Contact for details
Water Content (KF)	≤ 0.1%

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