Description

3,9-Bis(Oxiranyl)-2,4,8,10-Tetraoxaspiro[5.5]Undecane is a high-purity, multifunctional epoxy compound characterized by its unique spirocyclic structure, offering enhanced thermal stability and reactivity. This compound is a critical intermediate and cross-linking agent valued for its ability to form dense, high-performance polymer networks. It is essential for manufacturers in the advanced materials, electronics, and specialty coatings sectors seeking to improve the durability and chemical resistance of their products.

Application

• Epoxy Resin Formulation: Serves as a reactive diluent and cross-linking agent to enhance thermal stability, chemical resistance, and mechanical properties of cured epoxy systems.
• Electronic Encapsulants & Underfills: Used in semiconductor packaging and printed circuit board (PCB) protection due to its low shrinkage, excellent adhesion, and reliable performance under thermal stress.
• High-Performance Coatings: A key component in industrial, automotive, and aerospace coatings that require superior durability, weatherability, and corrosion resistance.
• Composite Materials: Functions as a matrix resin or modifier in fiber-reinforced plastics (FRP) and other composites to improve interlaminar shear strength and heat distortion temperature.
• Adhesives & Sealants: Imparts high strength and environmental resistance to structural adhesives used in demanding assembly applications.
• Optical Materials: Potential use in optical lenses and transparent encapsulants where clarity and high refractive index are required.

Basic Information

Product Name	3,9-Bis(Oxiranyl)-2,4,8,10-Tetraoxaspiro[5.5]Undecane
CAS No.	5703-76-4
Molecular Formula	C11H16O6
Molecular Weight	244.24 g/mol
Synonyms	1,4-Bis[(2,3-epoxypropoxy)methyl]-2,6,7-trioxabicyclo[2.2.2]octane; 3,9-Diglycidyl-2,4,8,10-tetraoxaspiro[5.5]undecane; Spiroglycidyl Ether; DGE-SP; Epoxy Spiro Compound; Bisphenol A Diglycidyl Ether Spirocyclic Analog; 2,4,8,10-Tetraoxaspiro[5.5]undecane, 3,9-bis(oxiranylmethyl)-
EINECS	227-183-9

Quality Control

Our 3,9-Bis(Oxiranyl)-2,4,8,10-Tetraoxaspiro[5.5]Undecane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay, epoxy equivalent weight (EEW) determination, and impurity profiling, to ensure it meets precise specifications for high-performance applications. Certificates of Analysis (COA) detailing purity, physical properties, and test results are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C / 59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Epoxy Equivalent Weight (EEW)	122 - 126 g/eq
Viscosity (25°C)	Contact for details
Color (Gardner)	≤ 2
Moisture (KF)	≤ 0.2 %

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