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More info in the amateur Pyrotechnics and chemistry forum http://pyroprojektek.org/index.php?/blogs/entry/7-how-to-make-potassium-perchlorate-kclo4-full-video-toturial-and-description

My website and another descriptions from kclo3 and kclo4: http://mx5-kevin.blogspot.com

Potassium perclorate versus potassium clorate.The video shows the important differences you need to know about it.
Potassium Chlorate extremely unstable in the presence of sulfur or phosphorus and many other mixtures. It reacts vigorously, and in some cases spontaneously ignites or explodes, when mixed with many combustible materials.Potassium Chlorate easy contain highly reactive chloric acid which makes it even more dangerous.Potassium Perchlorate KCLO4 it does not contain any cloric acid.Use much more stable Potassium Perchlorate in pyrotechnic compositions.Do not use Potassium Chlorate in: Flash Powders,Whisle Mix,Star compositions,use stable Potassium Perchlorate for your own safety.Potassium Chlorate kclo3 sensitivity to shock or friction is highly increased unlike Potassium Perchlorate KCLO4.In the potassium chlorate test you can see how easy can ignite from friction and why not recomended in: flash powder,star compositions or wisle mix but especially if you make armstrong mix from matches.And why you need potassium perchlorate in this mixtures and how much safer.It would be ideal to reject KCLO3,chlorates from fireworks.

The tests: hydrochloric acid: 1.test kclo3 with hcl Potassium chlorate hydrochloric acid and kclo4 hcl potassium perchlorate hydrochloric acid. 2.test:Kclo3 and kclo4 heating (melting point differences).3.tests reactions with chemicals:Kclo3 red phosphorus (armstrong mixture) kclo3 s (potassium chlorate sulphur), kclo4 s (Potassium perchlorate sulphur), kclo3 al (potassium chlorate aluminium) sensitivity,Kclo4/Mg/S potassium perchlorate magnesium sulphur flash powder impact friction sensitivity.

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