Synonyms: Titanate(2-),bis(oxalato)oxo-, barium, tetrahydrate (8CI); Titanate(2-),bis[ethanedioato(2-)-O,O']oxo-, barium, tetrahydrate, (SP-5-21)-; Titanate(2-),bis[ethanedioato(2-)-kO1,kO2]oxo-, barium, tetrahydrate,(SP-5-21)- (9CI); Barium bis(oxalato)oxotitanate(2-) tetrahydrate; Bariumtitanyl dioxalate tetrahydrate; Barium titanyl oxalate (BaTiO(C2O4)2)tetrahydrate; Barium titanyl oxalate tetrahydrate; Barium titanyloxalate(BaTiO(C2O4)2.4H2O)