12314-25-9 1308-04-9 164057-75-4 25729-03-7 C.I. 77323 Cobalt oxide (8CI,9CI) Cobalt oxide (Co2O3) Cobalt peroxide Cobalt sesqioxide Cobalt sesquioxide Cobalt trioxide Cobalt(3+) oxide Cobalt(III) oxide Cobaltic oxide Dicobalt oxide Dicobalt trioxide EINECS 215-156-7