Description

Exo-7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride is a high-purity, bicyclic anhydride monomer with a rigid, norbornene-like structure. This compound is a critical building block for advanced polymers, offering exceptional thermal stability and mechanical properties to the final materials. It is primarily sought by R&D and production teams in the specialty polymer, epoxy resin, and pharmaceutical intermediate sectors.

Application

• Epoxy Resin Curing Agent & Modifier: Imparts high heat resistance, low dielectric constant, and improved mechanical strength to cured epoxy systems for electronics and aerospace composites.
• Polyimide & Polyamide Synthesis: Serves as a key monomer for producing high-performance engineering plastics with excellent thermal and chemical stability.
• Pharmaceutical Intermediate: Used in the synthesis of complex drug molecules, leveraging its rigid, functionalizable bicyclic scaffold.
• Crosslinking Agent for Polymers: Enhances the crosslink density and performance characteristics of various specialty coatings and adhesives.
• Research & Development: A valuable reagent for academic and industrial research in novel polymer chemistry and material science.

Basic Information

Product Name	Exo-7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic Anhydride
CAS No.	29745-04-8
Molecular Formula	C8H8O4
Molecular Weight	168.15 g/mol
Synonyms	7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride, exo-; exo-3,6-Epoxy-1,2,3,6-tetrahydrophthalic anhydride; exo-Nadic anhydride; exo-cis-3,6-Endoxo-δ⁴-tetrahydrophthalic anhydride; exo-3,6-Epoxy-δ⁴-tetrahydrophthalic anhydride; 3,6-Epoxy-1,2,3,6-tetrahydrophthalic anhydride, exo-; exo-ETPA
EINECS	Contact for details

Quality Control

Our Exo-7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles 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 hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	158 - 162 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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