dikarboxüülhapeede
Dikarboxüülhapeede, or dicarboxylic acids, are a class of organic compounds that contain two carboxyl functional groups (-COOH) per molecule. They can be linear, with two terminal carboxyl groups on a carbon chain, typically represented as HOOC-(CH2)n-COOH, or they can be aromatic, with two carboxyl groups attached to an aromatic ring. They also include unsaturated examples such as maleic and fumaric acids, which have a carbon–carbon double bond between the carboxyl groups.
Common examples range from the simple oxalic acid (ethanedioic acid) and malonic acid (propanedioic acid) to
Occurrence and production: some diacids occur naturally in plants or as metabolic intermediates, while industrial production
Uses: dicarboxylic acids serve as key monomers in the synthesis of polyesters (for example, terephthalic and