Depending on what the metal you're using is. If it's something mild, like iron, I would gander to say it's safe to just have in a bucket. But if it's something insane, like magnesium, flush that shittle down the toilet.
Black powder explodes. Flash powder burns extremely fast (that's why it "flashes") and can be dangerous if you don't handle it right.
The autoignition temperature is 590 oC.
Initial report are that flash powder removed from fireworks was used to build the bomb.
750 mg to 1 gram of flash powder is enough to blow a hole in the dirt and punch a hole in 1/4 plywood.
The powder burns much faster than the ribbon, providing a quick bright flash. The ribbon would burn more slowly, providing a longer lasting light but not as bright.See the Related Question for why a powdered substance will generally react faster.
Black powder explodes. Flash powder burns extremely fast (that's why it "flashes") and can be dangerous if you don't handle it right.
Here are some ingredients in fireworks... Charcoal, gun powder (black powder) ( for explosion), alumunuim powder ( for flash), potassium nitrate (saltpeter) (for smoke).
Black powder (gun powder) for explosion magnesuim for shimmer sparkle effect copper for green coloring iron for gold coloring potassium nitrate for smoke and alumunuim powder for flash
Fine Alumimum powder and potassium chlorate or perchlorate
It will depend on the oxidizer you are using. Nitrate-aluminum flash powders are pretty stable, but a ammonium perchlorate-aluminum flash powder is extremely shock sensitive. One scrap on the ground and it could ignite. By the way, flash powders (with the exception of ammonium nitrate and aluminum which is explosive) do not detonate; they just burn very fast.
you can't buy flash powder. it is used to make firecrackers and explosives, so it is not commercially available. You can make it from an oxidiser and a metallic fuel such as KClO4 and Aluminium.
Flash powder was invented by a man named Joshua Lionel Cowen. He registered for a patent in 1899 for the flash powder to be used in photography.
Early flash powder was made of thermite. And yes, it was extremley messy and if the pan holding the flash powder wasn't held carefully could easily cover everything
No flash powder is stronger and also more unsafe! I suggest reading up on the matter if you would like to know more.
Flash powder.
Firecrackers have black powder or flash powder. These powders have charcoal, sulfur, and poatassium nitrate, aluminum, iron, steel, zinc, and/or magnesium dust. When you light up the firecrackers, it heats up these metals, and when the metals heat up, they give off a shine when they burn.
Many people confuse gunpowder and black powder. Both of them are mixtures, although gunpowder, also known as smokeless powder, was 100% nitrocellulose, a compound, when it was first used in the mid 1800's. Black powder is a very intimate mixture of potassium nitrate, sulfur and charcoal. Smokeless powders today get their energy when burned from 100% nitrocellulose to mostly nitroglycerine. Most smokeless powders obtain their energy from a mixture of nitrocellulose and nitroglycerine. However, even smokeless powders made today with pure nitrocellulose are still a mixture because manufacturers add other compounds to the powder to reduce the muzzle flash, stabilize the burning rate, slow the decomposition of the powder and to neutralize any corrosive acids formed from the powder's decomposition.