I think, given the issues with electrodes, that making the stuff from bleach might be simpler. Not as good a yield and messier, but it works. Beware of using salvaged carbon electrodes as any impurities from them in the resulting KClO3
might increase its already high sensitivity to friction.
Also, be aware of that sensitivity... KClO3
can easily and spontaneously
'go off' when mixed with fuels like sugar. Be especially careful of larger quantities which can, especially if slightly moist, start to react slowly in the centre. This heats the centre up and before you know it the whole lot is erupting! I have personal experience of this; I've never run across a lab so fast in my life!
Seriously, if you want to play with KClO3
, please be very, very careful. I recommend reading this http://www.jamesyawn.com/kclo3/notes.html
first. This excerpt sums it up though: Working with chlorates safely requires substantial precautions and cautious procedures:
- working with very small quantities of any given mixture until the nature of the mixture is well known
- wearing face mask, fireproof gloves, and other suitable protective gear while working with pyrotechnic mixtures including chlorates
- avoiding the use of substances which create sensitive or unstable mixtures with chlorates. Sugar is one of them. Others include sulfur, phosphorous and compounds that contain sufur and phosphorous, and many organic fuels.
- avoid storing pyrotechnic mixtures in any tightly sealed container that might serve to build up explosive pressures.
- avoid storing in a hard container such as metal, glass, or hard plastic which could fragment if an explosion occurred
- avoid the use of screw caps or plugs that might cause excessive friction. If a friction-type of cap is used, it must be kept clean of the pyrotechnic mixture
- avoid packing or ramming of any mixture in a casing without very substantial safety precautions. Ramming such mixtures in a tube while holding it in the hand is one way amateur pyrotechnists lose fingers.
Unless you have a particular need for KClO3
, I would recommend trying another oxidiser. Unless you are thinking of its potential use in a high explosive like a cheddite of course... In that case, be really
careful! There are better and easier to make HE compounds.
Sorry if I'm preaching to the converted and you already know all of this, but I would regret not saying it if you had to type your next post one-handed
Enjoy, and be safe