12047-11-9 Barium dodecairon nonadecaoxide Barium ferrate Barium ferrite Barium hexaferrite Barium iron oxide Barium iron oxide (BaFe12O19) EINECS 234-974-5 Ferotop GP 500 Ferrate (fe12-O19(sup 2-)), barium (1:1) (9CI) Ferroxdure GP 500