I was precipitating Zn +Mn carbonates from HCl + Alkaline batteries. I had just finished up the bulk precipitation and decanted off the liquid. I then
wanted to double check the liquid to make sure everything precipitated out, but upon adding more Sodium Bicarb. a very light tan precip. started
forming, which is usually MnCO3. So I wanted kick up the PH quite a bit but didn't have Sodium Carbonate nor Hydroxide on hand, so thinking that
Oxiclean is just Sodium Carbonate + H2O2, I mixed up a solution of Oxiclean and a added it to the decanted liquid. I was dumbfounded when the liquid
went from water clear to green/turquoise. Some brown precip. also formed which looked like hydrated MnO2.
I Tried to dig up info on Manganates, and saw the color of them is green. Upon further digging, I saw a little bit of info on Sodium Manganate, but
info found said it was pretty unstable in solution. There should be little to no potassium present as I only used Sodium Bicarb. and Oxiclean. I had
also stripped out the KOH from the batteries from previous dissolving runs. So right now I have this green unknown solution with a light tan layer on
the bottom, a small brown layer on top of the tan layer, and was hoping if anyone else thinks it's some sort of Manganate in solution. Maybe the
surfactant in Oxiclean is holding it in solution? |