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Questions about perchlorate and chlorate

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#21 lloyd



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Posted 18 June 2017 - 09:27 AM

One example of a mixture that can become more sensitive with time is Dr. Shimizu's Napthalene black smoke star formula.


It contains chlorate, sulfur, and a large excess of napthalene as fuel.  There's so much fuel in it that it's not even the least-bit sensitive to either impact or friction.


But....napthalene sublimes into the air at STP.  So, after a time, the stars become fuel-poor, and the only primary constituents are chlorate and sulfur -- OOPS!


That's one of those formulae that needs a "best used by date" on it! <grin>



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#22 DesertCatUSN


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Posted 18 June 2017 - 01:30 PM

Thanks! I'll stick with the known recipes. Roger

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