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How do you make pigments from iron?

+6 votes
I have iron dust to use for for the making of pigments that I wish  use fo making  concrete die. What is the best way to go foward?
asked Nov 17, 2013 in Art Materials by wwinn Newbie (120 points)
   

1 Answer

+4 votes
There are a  number of pigments that contain iron but they are made of iron combined with other molecules. Iron oxides (with colour index numbers CI 77491, CI 77492, CI 77499) are Fe2O3 (Red), Fe3O4 (black), FeHO2 (yellow). Also Fe4 [ Fe(CN)6 ] 3 Ferric Ferrocyanide (CI 77510) is a blue powder. These are the main iron containing colours and you will often see them listed on colour cosmetics such as lipsticks.  
answered Nov 26, 2013 by HantsDave Novice (280 points)

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