Magnesium with potassium perchlorate

Because of its higher melting point and less-exothermic decomposition, potassium perchlorate produces mixtures that are less sensitive to heat, friction, and impact than those made withKClO] [2]. Potassium perchlorate can be used to produce colored flames (such as red when combined with strontium nitrate), noise (with aluminum, in "flash and sound" mixtures), and light (in photoflash mixtures with magnesium). 

Therefore, the initial choice for an oxidizer is one with an exothermic heat of decomposition such as potassium chlorate (KCIO 3). However, mixtures of both chlorate and perchlorate salts with active metal fuels are too ignition-sensitive for commercial use, and the less-reactive - but safer - nitrate compormds are usually selected. Potassium perchlorate is used with aluminum and magnesium in some "photoflash" mixtures these are extremely reactive compositions, with velocities in the explosive range. 

In a balanced chemical equation, the number of atoms of each element on the left-hand, or reactant, side will equal the number of atoms of eaeh element on the right-hand, or product, side. The above equation states that one mole of potassium perchlorate (KCIO 4, a reactant) will react with 4 moles of magnesium metal to produce one mole of potassinm chloride (KCl) and 4 moles of magnesinm oxide (MgO). 

Composition Mixtures of potassium perchlorate or barium and strontium nitrate with magnesium powder or flakes, P4. 

Potassium bichromate suppresses the corrosion of magnesium especially with ammonium perchlorate. Place a small amount of a magnesium powder into a test tube which contains potassium bichromate solution in water. 

This composition is somewhat hygroscopic because it contains strontium nitrate. When moistureproof stars are manufactured with this composition using nitrocellulose paste, they can be used in practice The burning rate is adjusted by changing the ratio of magnesium to oxidizers. Potassium perchlorate decreases the ash ... 

Chemistry of fireworks Typical fireworks contain an oxidizer, a fuel, a binder, and a color producer. The oxidizer is the main component, making up from 38 to 64 percent of the material. A common oxidizer is potassium perchlorate, KCIO4. The presence of chlorine in the oxidizer adds brightness to the colors by producing light-emitting chloride salts that make each color flame sparkle. When it oxidizes a fuel such as aluminum or sulfur, it produces an exothermic reaction with noise and flashes. Aluminum or magnesium makes the... 

Homemade flash powder mixtures have a variety of formulations. They usually contain finely divided aluminum or magnesium metal and an oxidizing agent, such as ammonium chlorate, potassium chlorate, or potassium perchlorate, with possible additions of sulfur and/or sawdust. 

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