THX-1138 Posted June 30, 2007 Share Posted June 30, 2007 I have some finely-divided iron disulfide, possibly mixed with some other things, that I wish to 'dissolve' away -- or at any rate remove from the mix. What would be a good way of doing this using fairly safe chemicals? (I.e., not concentrated nitric acid, although H2SO4 or HCl are possible.) Among the things that may be left behind are SiO2 and microscopic amounts of gold, neither of which I'm concerned about being affected by the solvents. If I heat FeS2, won't it break down and leave me with elemental Fe and SO2? If so, perhaps then I could act directly on the iron and make it into a soluble compound that could be dissolved and washed away.. Link to comment Share on other sites More sharing options...
olmpiad Posted July 4, 2007 Share Posted July 4, 2007 Just react it with some HCl, the Fe will go into solution, and the S will be given off as H2S. Link to comment Share on other sites More sharing options...
YT2095 Posted July 4, 2007 Share Posted July 4, 2007 Heat It, it will Then decompose, most acids won`t touch it. Link to comment Share on other sites More sharing options...
THX-1138 Posted July 12, 2007 Author Share Posted July 12, 2007 'S what I thought. However, I haven't been able to find any reference for the temperature at which it starts to break down. Any pointers? Ta.. Link to comment Share on other sites More sharing options...
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