Author Options:

My Flash Powder won't Flash. Potassium Perchlorate and Aluminum Powder. Whats wrong? Answered

I mixed Potassium Perchlorate and Aluminum Powder and all it did was ball up.



8 years ago

You should be using very finely ground chemicals, and a 30/70 ratio of aluminum to perchlorate. This will give you the best results. Also, make sure your chemicals are moisture-free. That might explain why it clumped up when you mixed them.

The things that would alter reaction rate in this case are concentration, particle size and stoichometric ratio; -make sure you use a common and well known ratio -try to make the particle size of both the KClO4 and Al as small as possible (this increases surface area) -and check the quality of your chemicles, they might be less than 80%!

What proportions, which recipe were you following? L