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Armstrong's mixture is a highly shock and friction sensitive [1] explosive. Formulations vary, but one consists of 67% potassium chlorate, 27% red phosphorus, 3% sulfur, and 3% calcium carbonate. [2] [3] It is named for Sir William Armstrong, who invented it sometime prior to 1872 for use in explosive shells. [4] [additional citation(s) needed]
M-80s are an American class of large powerful firecrackers, sometimes called salutes. [1] M-80s were originally made in the mid 20th century for the U.S. military to simulate explosives or artillery fire. The "M" is designated by a U.S. military convention for "standard" equipment and "80" is for the 80 grains (5.2 grams) of flash powder within ...
Potassium nitrate/magnesium flash powder should be mixed and used immediately and not stored due to its tendency of self-ignition. If magnesium is not a very fine powder, it can be passivated with linseed oil or potassium dichromate. The passivated magnesium flash powder is stable and generally safe to store. 2 KNO 3 + 5 Mg → K 2 O + N 2 + 5 MgO
A typical cherry bomb contains a core of explosive composition (e.g., flash powder or, less commonly, black powder) which is generally encapsulated inside two nested paper cups, typically of the type used to plug the ends of an M-80, which is in turn most commonly surrounded by a layer (approx. one-quarter inch thick) of sawdust infused with a ...
Potassium picrate – used in some whistle compositions, safer than gallic acid but still dangerous, with heavy metals (e.g. lead) forms explosive salts; Terephthalic acid – a fuel in some smoke compositions; Hexamine – a low-reactivity, accessory fuel; Anthracene – a fuel in some smoke compositions, produces black smoke
A black match is a type of fuse consisting of cotton string coated with a dried slurry of black powder and glue. This acts as a simple pass-fire, and was used to fire ancient cannons. They are used today in fireworks construction. A quick match or piped match is a type of black powder fuse that burns very quickly, some hundreds of feet per ...
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Colors may vary. They contain 10 grams of flash powder that is ignited via a visco fuse positioned in the center or side of the tube. [1] In some cases, they are maxed out at 15 grams which is the physical limit for 2" x 3/4". These are the most common flash salutes you will see on the streets in and around the 4th of July.