A Number Of Chemicals Are Dubbed Iron( Iii) Oxide-Hydroxide. These Chemicals Are Oxide-Hydroxides Of Iron, And May Occur In Anhydrous ( Feo( Oh) ) Or Hydrated ( Feo( Oh) · Nh2o) Forms. The Monohydrate ( Feo( Oh) · H2o) Might Otherwise Be Described As Iron( Iii) Hydroxide ( Fe( Oh) 3) , And Is Also Known As Hydrated Iron Oxide Or Yellow Iron Oxide.