Iridium nicyuma kirwanya ruswa cyane.Iridium yuzuye ntishobora gushonga muri acide zose zidasanzwe kandi ntizangirika nibindi byuma bishonga.Kimwe nandi matsinda ya platine yibyuma, iridium ivanze irashobora kwamamaza neza ibinyabuzima kandi birashobora gukoreshwa nkibikoresho bya catalizator.
