Hi

I am looking into making a new product that would need some type of fuel to burn real hot for 5-10 seconds. So far I have experimented with black powder and that seems to work good. My question is are there any laws that would prohibit me from producing a consumer good that would have a small amount of black powder inside of it, or something similar to black powder. If there is anyone out there that can point me in the right direction I would be very thankful, thanks!

-josh