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Flash PowderFlash powder is a mixture of oxidizer and metallic fuel (typically 70:30 by weight potassium perchlorate and aluminum powder) which burns extremely quickly and if confined will produce a loud report. It is widely used in fireworks and theatrical pyrotechnics. Flash powder is powder that burns so fast that it looks like it just flashes out of existence. However, if approximately 4 ounces of the stuff explodes together, you will notice that the flash is accompanied by quite an explosion. All of the powders should be ground up into a very fine powder, about 400 mesh or better. Common household flour is about 400 mesh. You can sometimes buy powdered aluminum or other chemicals at 600 mesh. This stuff is awesome for flash powder! The mixture of any chlorate with phosphorus or sulfur is extremely sensitive to friction and percussion and explodes with great violence. Chlorate explosives must not be stored together with ammonium nitrate explosives, since the ammonium chlorate which is formed when these two substances touch explodes, taking both mixtures of flash powder with it. When mixing chlorate explosives, crush all of the chemicals separately. Sift the oxidizer through a piece of screen wire to break up the material into small pieces. Then sif the other chemicals if they need it. Mix all the chemicals together and finish up by sifting them through a piece of fine wire screen or shaking them in a Zip-Loc bag. Do not use this kind of mixing when the mixture is sensitive to friction, impact, or static electricity. 'flash' is ESD (static) sensitive, as well as sensitive to friction and impact. Formula one - 2 parts Potassium Perchlorate
- 1 part 600 mesh Aluminum Powder
- This formula is one of the best. It produces a very, very, extremely lound explosion. Easy to ignite with a fuse, it is not moisture absorbent, not very sensitive to impact or friction. Sodium chlorate or Potassium chlorate can be used instead of potassium perchlorate but it becomes very sensitive to friction and impact. Four ounces of this stuff equals one stick of dynamite.
Formula two - 2 parts Potassium Perchlorate
- 1 part 400 mesh Aluminum Powder
- This formula is almost as good as formula one. This is what most firecrackers, M-80s and other fireworks are made of.
Formula three - 3 parts Barium Nitrate
- 3 parts Potassium Perchlorate
- 4 parts 400 mesh Aluminum Powder
- This formula produces a very bright flash. It used to be used for the flash boxes for olden day box cameras you see in the old movies. That T-stick the photographer holds up is filled with this stuff.
Formula four - 2 parts Potassium Perchlorate
- 1 part Sulfur
- 1 part 400 mesh Aluminum Powder
- This formula is not very impact or friction sensitive. It produces a very, very loud explosion.
Formula five - 2 parts Sodium Chlorate
- 1 part Sulfur
- 1 part 400 mesh Aluminum Powder
- This formula is very moisture absorbent but it is very imact and friction sensitive. Not so much flash as noise is put out by it.
Formula six - 2 parts Potassium Chlorate
- 1 part Sulfur
- 1 part 400 mesh Aluminum Powder
- This formula is used in the manufacture of cap gun caps, so naturally it is very impact sensitive. Watch out, because it could blow up at any time when making it. Only make small amounts at a time, so if it blows up, it won't take you with it.
Formula seven - 6.7 parts Potassium Chlorate
- 2.7 parts Red Phosphorus
- 0.3 part Sulfur
- 0.3 part Calcium Carbonate
- This formula is very, very, extremely sensitive to impact, friction, and even electricity. It is amazingly dangerous!! It will ignite even when wet. Stay as far away from it as possible, especially when making it.
Formula eight - 2 parts Potassium Permaganate
- 1 part Sulfur
- 1 part 400 mesh Aluminum Powder
- This formula is slightly impact sensitive, so be careful when making it. I love it because it ignites automatically when it gets wet. Dump some water on it or leave it out when it's raining and kablooey! This stuff has endless uses.
Formula nine - 7.5 parts Potassium Chlorate
- 1.5 parts Charcoal Dust
- 1 part Sulfur
- This formula produces a very small explosion when ignited in the open, but when put in a strong container, can really blow things apart with lots of noise. It is impact and friction sensitive, so watch out.
Formula ten - 6 parts Potassium Chlorate
- 3 parts Animony sulfide
- 1 part Sulfur
- Watch it, because this formula and the ones following have not been tested and could be highly volatile. Only make these if you are into pain.
Formula eleven - 7.5 parts Sodium Chlorate
- 1.5 parts Charcoal Dust
- 1 part Sulfur
Formula twelve - 7.5 parts Potassium Chlorate
- 2.2 parts Gallic Acid
- 0.3 part Red Gum
External link *The Explosives and Weapons Forum has recipes for almost every explosive ever invented!
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