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Flash powder is a powder comprised of Potassium Perchlorate and Aluminum Powder. It's called flash powder for it's rapid expansion, it literally flashes out of [existence] with a bright flash of light. Flash powder is used in most exploding [firecrackers] but in small amounts. The legal limit for the U.S. is 50 milligrams, M-80s and other such types of [firecrackers] contained the same powder but in larger quantities. M-80s usually contained 7 grams of flash powder. Flash powder is so powerful that in larger amounts it will explode upon ignition without the need for a shell for gasses to build up in.
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