Adipic acid is an important organic dibasic acid with the structural formula HOOC(CH2)4COOH. It can undergo salt-forming reaction,esterification reaction, amidation reaction, etc., and can be polycondensed with diamine or diol to form high molecular polymer.Adipic acid is an industrially important dicarboxylic acid. It plays an important role in chemical production, organic synthesis industry, medicine, and lubricant manufacturing. Its output ranks second among all dicarboxylic acids.