The
chemical compound potassium chloride (KCl) is a metal
halide composed of
potassium and
chlorine. In its pure state it is odorless. It has a white or colorless
vitreous crystal, with a crystal structure that cleaves easily in three directions. Potassium chloride crystals are either
simple cubic or
face-centered cubic depending on what atoms are involved. If only potassium or chlorine atoms are considered, then the structured is face-centered cubic. However, both atoms form a crystal with a simple cubic structure: x-ray diffraction analysis will yield a simple cubic structure. Potassium chloride is also commonly known as "Muriate of Potash".
Potash varies in color from pink or red to white depending on the mining and recovery process used. White potash, sometimes referred to as soluble potash, is usually higher in analysis and is used primarily for making liquid starter fertilizers. KCl is used in medicine, scientific applications,
food processing and in judicial
execution through
lethal injection. It occurs naturally as the
mineral sylvite and in combination with
sodium chloride as
sylvinite.
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