As far as fast burning mixtures are concerned (ie flash powder) these ingredients are truly out of the question. I'm sure there are probably a few
slower comps that can be made and handled with safety, but in general these two are of exiled from the list of safe and useful pyrotechnic oxidizers.
Consider mixing them with some less reactive fuels on a ~1g scale to test the sensitivity. Personally, I've always been curious to know how they would
behave in a fine mixture with polyethylene, PVC or parlon.
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