Dicarboxylic acid

Dicarboxylic acids are carboxylic acids which have two carboxyl groups (- COOH). Carboxylic acids having only one carboxyl group are referred to as mono-carboxylic acids. Suitable dicarboxylic acids are referred to all compounds with two acid groups to further define the structure of the molecule without residue.

The homologous series of non -branched, saturated dicarboxylic acids, which are referred to by IUPAC as alkanedioic acids, starts with oxalic acid ( HOOC -COOH), followed by malonic acid having three carbon atoms and of succinic acid having four carbon atoms in the main chain. For the synthesis of polyesters or polyamides significant carboxylic acids are adipic acid and sebacic acid with a chain length of six or ten carbon atoms. The alkenedioic acids known which contain a C = C double bond are maleic acid and fumaric acid. Aromatic dicarboxylic acids such as terephthalic acid are important for the synthesis of polymers such as PET; the esters of the isomers of phthalic acid plasticizers are important.

Alkanedicarboxylic

Other important dicarboxylic acids

• Tartronic
• Tartaric acid
• Malic acid
• α - ketoglutaric
• Oxaloacetic
• Phthalic
• Isophthalic acid
• Terephthalic acid
• Glutamic acid
• Aspartic acid
• Maleic
• Fumaric acid