Description

Exo-3,6-Epoxy-1,2,3,6-Tetrahydrophthalic Anhydride is a highly reactive, bicyclic anhydride monomer of significant industrial importance. Its strained epoxide and anhydride functionalities make it a versatile building block for the synthesis of advanced polymers and specialty chemicals. This compound is particularly valuable for manufacturers in the epoxy resin, adhesives, and coatings sectors seeking to enhance thermal stability and cross-linking density in their formulations.

Application

• Epoxy Resin Curing Agent & Modifier: Used as a co-curing agent or reactive diluent to improve the thermal and mechanical properties of epoxy systems for high-performance composites and electronics.
• Polymer Synthesis: Serves as a key monomer for the production of polyimides, polyesters, and alkyd resins, imparting rigidity and heat resistance.
• Cross-linking Agent: Employed in the formulation of thermosetting plastics, powder coatings, and industrial adhesives to create durable, chemically resistant networks.
• Chemical Intermediate: Utilized in organic synthesis for pharmaceuticals and agrochemicals, particularly in Diels-Alder reactions and ring-opening polymerizations.
• Electronic Encapsulants: Incorporated into resins for semiconductor encapsulation and printed circuit board laminates due to its excellent electrical insulation properties.

Basic Information

Product Name	Exo-3,6-Epoxy-1,2,3,6-Tetrahydrophthalic Anhydride
CAS No.	6118-51-0
Molecular Formula	C8H8O4
Molecular Weight	168.15 g/mol
Synonyms	1,2,3,6-Tetrahydro-3,6-epoxyphthalic anhydride; 4,7-Epoxyisobenzofuran-1,3-dione, 4,4a,7,7a-tetrahydro-; endo-cis-Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride, epoxidized; Epoxidized Nadic Anhydride; ENA; exo-3,6-Epoxy-δ⁴-tetrahydrophthalic anhydride; 3,6-Epoxy-1,2,3,6-tetrahydrophthalic anhydride
EINECS	228-081-4

Quality Control

Our Exo-3,6-Epoxy-1,2,3,6-Tetrahydrophthalic Anhydride is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including assay, impurity profiling, and physical characterization, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, moisture content, and other critical parameters is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under dry, inert conditions to prevent hydrolysis and degradation of the anhydride functionality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	118 - 122 °C
Moisture (KF)	≤ 0.5%
Heavy Metals	≤ 10 ppm

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