Iron oxide, nke a makwaara dị ka ferric oxide, burned limonite, burned ocher, iron red, iron red, red powder, Venetian red (isi ihe mejupụtara ya bụ iron oxide), wdg. Usoro kemịkalụ Fe2O3, nke a na-agbaze na hydrochloric acid, bụ ntụ ntụ aja aja-acha ọbara ọbara. Ntụ ntụ aja aja-acha ọbara ọbara ya bụ agba dị ala, nke a na-akpọ iron oxide uhie n'ụlọ ọrụ mmepụta ihe. A na-eji ya na agba, ink, roba na ụlọ ọrụ ndị ọzọ dị ka ihe na-akpali akpali, ihe na-eme ka ọ dị mma maka iko, nkume dị oké ọnụ ahịa na ígwè, a pụkwara iji ya mee ihe dị ka ihe eji eme ígwè.