Furan-2,4-dicarboxylic acid is primarily used as a building block in the production of bio-based polymers. It serves as a renewable alternative to petroleum-derived terephthalic acid in the synthesis of polyesters, such as polyethylene furanoate (PEF). PEF is valued for its superior barrier properties against gases like oxygen and carbon dioxide, making it ideal for packaging applications, especially in the food and beverage industry. Additionally, this compound is explored in the development of high-performance materials, including fibers and films, due to its rigidity and thermal stability. Its use contributes to the advancement of sustainable and eco-friendly materials in various industrial sectors.