<unk>  is the inorganic salt with the chemical formula<unk> .  Like other<unk> s, this salt is a strong oxidizer although it usually reacts very slowly with organic substances.  This usually obtained as a colorless, crystalline solid is a common oxidizer used in fireworks, ammunition percussion caps, explosive primers, and is used variously in propellants, flash compositions, stars, and sparklers.  It has been used as a solid rocket propellant, although in that application it has mostly been replaced by the higher performance ammonium<unk> .<unk>  has the lowest solubility of the alkali metal<unk> s (1.5 g in 100 mL of water at 25 °C).
Potassium perchlorate
Sodium fluoride
Calcium fluoride
Sodium monofluorophosphate
Mercuric iodide
Aluminium chloride
Ammonium chloride
Sodium selenate