which is the reason why I first discuss it then change it An edit war is nothing pretty you know We ll see Anyway what you write is largely true but misleading Especially Free oxygen free fluorine and moisture surely will corrode the metallic walls However the chemical potential of the salt has to be controlled anyway so it is slightly on the reducing side containing some trivalent uranium So any free oxygen or fluorine will oxydize the uranium ions not the metal structure Moisture will be driven out with the off gas at working temperatures All this is pretty much a non issue Cryolithe Yes aluminium is produced by electrolysing alumina with cryolithe This can be considered a mixture or solution of sodium flouride aluminium fluoride and aluminum oxide certainly a molten salt But the cryolithe is really only a fluxing agent it is chemically non agressive and it doesn t extract aluminium or something You hinted that it does which is really misleading Heating is not a technological issue Sure it adds to the cost but other than that there s no problem A power reactor would run quite some time without ever being cooled down refuelling is done by adding some molten or even solid salt without shutdown cooling or heating But tritium is a problem To slow down tritium formation the lithium in the salt has to be almost pure Li 7 and even then tritium will form Tritium in the salt is no problem it doesn t attack metals Tritium migrating from the salt is a problem ORNL says they were able to chemically trap the tritium in the secondary cooling loop A problem yes but nothing major And of course there are the political issues An MSR doesn t fit into the razor blade business model currently employed research is still needed and that is expensive waste reprocessing is currently illegal though this is stupid when also applied to pyroprocessing and uranium is too cheap these days to make a breeder economically viable Yes if we can find some agreement I ll summarize this and move it to the article proper