Description

Exo-3,6-Endo-Epoxy-4,5-Epoxyhexahydrophthalic Anhydride is a highly functionalized, multi-ring anhydride derivative valued for its unique stereochemistry and reactive sites. This compound serves as a critical building block and curing agent in advanced polymer synthesis, offering enhanced thermal and mechanical properties to the final materials. It is primarily sought by manufacturers in the epoxy resin, specialty coatings, and high-performance composite industries, as well as by research institutions developing novel polymeric architectures.

Application

• Epoxy Resin Curing Agent: Functions as a high-performance hardener, imparting excellent heat resistance, chemical stability, and mechanical strength to cured epoxy systems.
• Synthesis of Specialty Polymers: Used as a monomer or cross-linking agent in the production of polyimides, polyesters, and other high-temperature engineering plastics.
• Advanced Composite Materials: A key component in matrices for aerospace, automotive, and electronic composites requiring superior durability.
• Chemical Intermediate: Serves as a precursor in organic synthesis for pharmaceuticals, agrochemicals, and fine chemicals, leveraging its reactive anhydride and epoxide groups.
• Adhesives and Sealants: Enhances the performance of high-strength, temperature-resistant adhesive formulations.
• Electronic Encapsulants: Used in potting and encapsulation compounds to protect sensitive electronic components from thermal and environmental stress.

Basic Information

Product Name	Exo-3,6-Endo-Epoxy-4,5-Epoxyhexahydrophthalic Anhydride
CAS No.	82660-86-4
Molecular Formula	C8H8O5
Molecular Weight	184.15 g/mol
Synonyms	1,2,3,6-Tetrahydro-3,6-epoxyphthalic anhydride; 4,7-Epoxyisobenzofuran-1,3-dione, hexahydro-; Hexahydro-4,7-epoxyisobenzofuran-1,3-dione; 3,6-Epoxy-1,2,3,6-tetrahydrophthalic anhydride; endo,exo-Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride, epoxidized; Epoxidized Nadic Anhydride derivative; ENA
EINECS	Contact for details

Quality Control

Our Exo-3,6-Endo-Epoxy-4,5-Epoxyhexahydrophthalic Anhydride is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with agreed specifications. Certificates of Analysis (COA) detailing key parameters such as assay, melting point, and moisture content are provided with each shipment.

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 hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis of the anhydride functionality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm

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