Synonyms: Piperazine edetate calcium [USAN];Calcium, (T-4)-((N,N'-1,2-ethanediylbis(N-(carboxymethyl)glycinato))(2-)-N,N',O,O')-, compd. with piperazine (1:1);Dihydrogen ((ethylenedinitrilo)tetraacetato)calciate(2-) compound with piperazine (1:1);Piperazine edetate calcium;Calcium, (T-4)-((N,N'-1,2-ethanediylbis(N-(carboxymethyl)glycinato))(2-)-N,N',O,O')-,compound with piperazine (1:1);calcium; 2-[2-(bis(carboxymethyl)amino)ethyl-(carboxymethyl)amino]acetic acid; piperazine