107720-80-9 118440-50-9 1309-38-2 1317-61-9 139660-10-9 144856-04-2 170277-36-8 208666-79-9 219674-87-0 73905-81-4 EINECS 215-277-5 Ferrosoferric oxide Iron oxide (Fe3O4) Iron(III) oxide TRIIRON TETRAOXIDE