Like lead minium, iron minium forms a dense surface, but is completely non-toxic. Iron minium is not corrosive and is also galvanically completely passive because the hematite is completely oxidized. As noted, iron minium is very easy to use on both wood and iron. And it is perfectly possible to paint on iron minium. Want to know more about iron minium? Visit our web page: Linseed oil paint as rust protection.