blueberry58 - 22-11-2014 at 13:06
MgSO3 + S = MgS2O3.
This process takes several hours at boiling temperature and continuous agitation. There are some catalyst that can accelerate it.
Thank you.
CHRIS25 - 23-11-2014 at 04:44
No idea if this helps, but a link from a German site gave this: http://pubs.acs.org/doi/abs/10.1021/je00013a045
Personally I would have travelled the Magnesium chloride and sodium thiosulphate route, if you have either already.
blueberry58 - 23-11-2014 at 13:54
After several tests I could not separate the MgS2O3. I continue work in both ways.
Thank you for the link @CHRIS25.