... : 67-43-6 Diethylenetriaminepentaacetic Acid Used as chelating agent and complexing agent Diethylenetriaminepentaacetic Acid (DTPA, CAS: 67-43-6) ... Acid, CAS: 67-43-6) has found countless applications in many industries, such as papermaking, textiles, food, medicine, ... -43-6, Diethylenetriaminepentaacetic Acid, mainly used as chelating agent or complexing agent in textile industry