Synonyms: Nickelate(3-), (N,N-bis((phosphono-kappaO)methyl)glycinato(5-)-kappaN,kappaO)-, sodium (1:3), (T-4)-;Trisodium nickelous N-carboxymethylnitrilodi(methylenephosphonate);Nickelate(3-), (N,N-bis((phosphono-kappaO)methyl)glycinato(5-)-kappaN,kappaO)-, trisodium, (T-4)-;Trisodium (N,N-bis(phosphonomethyl)glycinato(5-))nickelate(3-);nickel(2+) sodium (bis{[(dioxidophosphanyl)oxy]methyl}amino)acetate (1:3:1)