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Ammonium perchlorate
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<p>Ammonium perchlorate ("AP") is an <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula <a href="/facts/Ammonium/jYm8wc1n">NH4</a><a href="/facts/Perchlorate/WCC53zS2">ClO4</a>. It is a colorless or white solid that is soluble in water. It is a powerful <a href="/facts/Oxidizer/1FQzB8pQ">oxidizer</a>. Combined with a fuel, it can be used as a <a href="/facts/Rocket_propellant/IyFhQEA2">rocket propellant</a> called <a href="/facts/Ammonium_perchlorate_composite_propellant/LpEa20Tw">ammonium perchlorate composite propellant</a>. Its instability has involved it in accidents such as the <a href="/facts/PEPCON_disaster/ddozTss4">PEPCON disaster</a>. </p>