Vrej

I don't know. What compound do you think it formed and why were sparks given off when I added a drop of water?

But it's probably expensive. NaCl is the real abundent stuff you can buy at grocery but everything else can be bought at pharmacie which sell at 10x the normal price. It also depends on where you live. I'm sure KCl is not available to me.

NaNO3 is a good idea although I haven't tried it. I had KNO3 which has a slightly higher mp (350 C I think) Electrolysis is very slow. I had the idea to add another salt to it. KCl was not available to me so I had to use KI. Damn iodine vapors! Although they condensed and I had some nice crystals on the glass walls. Electrolysis was quite fast and I was able to produce K. I used a iron rod as cathode and a glass envelope to seal the K. I dropped a water droplet and sparks flew. I dropped some more, more sparks. I poured water and the stuff warmed up and that's all. Oh yes, anode was graphite rod. That stuff desintegrates. Any damn material you might use as anode will desintegrate I guess. Perhaps a few mg of K produced. It is very tough to produce this elements. Have plenty of propane or whatever you use ready. And be smart when you do this. Protect your eyes.