... 99% CAS: 67-43-6 Diethylenetriaminepentaacetic Acid Used as chelating agent and complexing agent Diethylenetriaminepentaacetic Acid ( ... Diethylenetriaminepentaacetic Acid, CAS: 67-43-6) is primarily used as a metal ion chelator. 2. DTPA 99%min ... as papermaking, textiles, food, medicine, agriculture, daily necessities, and others. DTPA, CAS: 67-43-6, Diethylenetriaminepentaacetic Acid, mainly used as ...