1,2-Benzenedicarboxylic acid, 4,4'-carbonylbis-, tripotassium salt 2479-49-4 4,4'-Carbonylbis(1,2-benzenedicarboxylic acid), tripotassium salt 68226-90-4 EINECS 269-328-1 Tripotassium hydrogen 4,4'-carbonylbisphthalate