I-iron oxide, eyaziwa nangokuthi i-ferric oxide, i-limonite eshisiwe, i-ocher eshisiwe, okubomvu kwensimbi, okubomvu kwensimbi, impushana ebomvu, okubomvu kwe-Venetian (ingxenye eyinhloko i-iron oxide), njll. Ifomula yamakhemikhali i-Fe2O3, encibilika ku-hydrochloric acid, ibomvu -impushana ensundu.Impushana yayo enombala onsundu ngokubomvu iyi-pigment yezinga eliphansi, ebizwa ngokuthi i-iron oxide ebomvu embonini.Isetshenziswa kupende, uyinki, irabha nezinye izimboni njenge-catalyst, i-ejenti yokupholisha ingilazi, itshe eliyigugu nensimbi, futhi ingasetshenziswa njengempahla eluhlaza yokwenza insimbi.