Description

Bis(2-Ethynylbenzoic)Anhydride is a specialized organic anhydride featuring two reactive ethynylbenzoic acid moieties. This unique structure makes it a valuable high-performance building block for advanced material synthesis, particularly where thermal stability and cross-linking potential are critical. It is primarily sought after by R&D and production teams in the pharmaceutical intermediates, specialty polymers, and advanced resin sectors.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of complex active pharmaceutical ingredients (APIs) and novel drug candidates.
• Polymer Cross-Linking Agent: Used to create high-performance, thermally stable thermoset polymers and resins through its reactive anhydride and alkyne groups.
• Specialty Material Synthesis: A crucial monomer for developing advanced polyimides, polyamides, and other engineering plastics with enhanced properties.
• Adhesive and Coating Formulations: Imparts improved durability, chemical resistance, and adhesion in high-end industrial coatings and adhesives.
• Academic and Industrial R&D: Employed in research laboratories for developing new materials with tailored mechanical and thermal characteristics.
• Electronic Materials: Potential use in the development of dielectric materials and encapsulants for the electronics industry.

Basic Information

Product Name	Bis(2-Ethynylbenzoic)Anhydride
CAS No.	56772-05-5
Molecular Formula	C18H8O3
Molecular Weight	272.26 g/mol
Synonyms	2,2'-(1,3-Dioxo-1,3-dihydroisobenzofuran-1,3-diyl)bis(ethynylbenzene); 1,3-Bis(2-ethynylbenzoyl)oxyisobenzofuran; Bis(2-ethynylbenzoyl) Anhydride; 1,3-Dioxo-1,3-dihydroisobenzofuran-1,3-diyl bis(2-ethynylbenzoate); (2-Ethynylbenzoic) Anhydride
EINECS	Contact for details

Quality Control

Every batch of Bis(2-Ethynylbenzoic)Anhydride is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards and provide comprehensive Certificates of Analysis (COA) for each shipment, detailing purity, identity, and impurity profiles. Our quality commitment supports applications requiring high-purity and consistent performance.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to exclude 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 structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Contact for details

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