rstar - 4-10-2012 at 23:55
Hypomanganate or Manganate(V) salts are bright blue... as Wikipedia says.
I want to see them, but never got any pictures 
anyone has ?
Pok - 5-10-2012 at 05:27
Use google: https://www.sciencemadness.org/whisper/viewthread.php?tid=14...
rstar - 5-10-2012 at 08:14
thx,
got a nice color
Ozone - 5-10-2012 at 13:40
You can reduce KMnO4 with bisulfite by careful titration to V (blue). Photograph it quickly, though! The air rapidly oxidizes it to VI (green).
O3