2,5-Furandicarboxylic Acid丨CAS 3238-40-2

2,5-Furandicarboxylic acid (CAS 3238-40-2) is a bio-based aromatic diacid widely used in polymer chemistry, materials science, and specialty chemical synthesis. It is a key monomer for producing polyethylene furanoate (PEF) and other furan-based polyesters, polyamides, and copolymers, which are explored as alternatives to petroleum-derived plastics. These polymers are applied in packaging, fibers, films, and engineering materials due to their strong mechanical and barrier properties. In addition, 2,5-furandicarboxylic acid is used as an intermediate in the synthesis of resins, plasticizers, and functional materials, as well as in research focused on sustainable materials and advanced polymer architectures. It is also applied in coatings and adhesives where rigidity and chemical resistance are required.

The benefits of 2,5-furandicarboxylic acid arise from its rigid furan ring structure, dual carboxylic acid functionality, and compatibility with polymerization processes. The aromatic-like furan core provides enhanced mechanical strength, thermal stability, and gas barrier performance in resulting polymers compared with many conventional aliphatic diacids. Its two carboxyl groups allow efficient condensation reactions, enabling the formation of high-molecular-weight polymers with controlled properties. The compound is chemically stable and suitable for scalable processing, supporting consistent polymer quality. These characteristics make it attractive for developing high-performance and sustainable materials in packaging, textiles, and engineering applications.