Description

Caronic Anhydride is a specialized cyclic anhydride of significant interest in advanced organic synthesis and polymer chemistry. Its unique bicyclic structure makes it a valuable building block for creating high-performance materials with tailored properties. This compound is essential for research and industrial applications requiring precise molecular architecture, such as in the development of specialty polymers, resins, and pharmaceutical intermediates. Professionals in R&D and chemical manufacturing rely on its consistent quality for innovative product development.

Application

• Polymer & Resin Synthesis: Serves as a key monomer or cross-linking agent for producing high-performance polyimides, polyesters, and epoxy resins with enhanced thermal and mechanical stability.
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs), leveraging its reactive anhydride functionality.
• Advanced Material Science: Employed in the development of specialty coatings, adhesives, and composite materials that require specific chemical resistance and durability.
• Chemical Research & Development: Acts as a versatile reagent for exploring new organic reactions and creating novel molecular structures in academic and industrial labs.
• Fine Chemical Production: Utilized in the manufacture of dyes, pigments, and other performance chemicals where its bicyclic framework imparts unique properties.

Basic Information

Product Name	Caronic Anhydride
CAS No.	67911-21-1
Molecular Formula	C7H8O3
Molecular Weight	140.14 g/mol
Synonyms	Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride; 5-Norbornene-2,3-dicarboxylic anhydride; Nadic anhydride (common trade name); cis-5-Norbornene-endo-2,3-dicarboxylic anhydride; 3a,4,7,7a-Tetrahydro-4,7-methanoisobenzofuran-1,3-dione; Endo-Nadic Anhydride; Carbic Anhydride
EINECS	Contact for details

Quality Control

Our Caronic Anhydride is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to meet exacting customer requirements. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment. We adhere to cGMP principles where applicable, supporting its use in regulated industries.

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); containers must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong bases, amines, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	160 - 165 °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.