Synonyms: Phosphonicacid, (1-hydroxyethylidene)bis-, trisodium salt (9CI); Phosphonic acid, (1-hydroxyethylidene)di-,trisodium salt (8CI); Dequest 2015DN; Oxyethylidenediphosphonic acid trisodiumsalt; Trisodium (1-hydroxyethylidene)diphosphonate; Trisodium1-hydroxyethane-1,1-diphosphonate; Trisodiumethane-1-hydroxy-1,1-diphosphonate; Trisodium ethanol-1,1-diphosphonate