does anyone know hoe to make this, or where to buy it (not over the internet)
What is it?
its a chemical used in pyro mixtures ie. flash powder
I did some internet research on chlorate & perchlorate, do the same and you'll find out. However, there were several references to mixtures of this being rather dangerous, shock-sensitive, unpredictable and explosive. KNO3 is generally regarded as a safer bet.Have you seen this Intstructable?https://www.instructables.com/id/EGXGY5PF23Z375E/?comments=all#C51BKSVF2FRVAB2L