The chemical compound potassium chloride (KCI) is a metal halide salt composed of potassium and chlorine. In its pure state, it is odorless and has a white or colorless vitreous crystal appearance, with a crystal structure that cleaves easily in three directions. Potassium chloride crystals are face-centered cubic. Potassium chloride was historically known as "muriate of potash". This name is occasionally still encountered in association with its use as a fertilizer. KCI is used in medicine, scientific applications, and food processing. It occurs naturally as the mineral sylvite and in combination with sodium chloride as sylvinite.
| ITEM | STANDARD |
| Appearance | White Crystalline Powder |
| Identification | Positive |
| Whiteness | > 80 |
| Assay | >99% |
| Loss on Drying | =< 0.5% |
| Acidity and Alkalinity | =< 1% |
| Heavy Metals (as Pb) | =< lmg/ kg |
| Arsenic | =< 0.Smg/ kg |
| Ammonium (as Nh • 4) | =< lO0mg/ kg |
| Sodium Chloride | =< 1.45% |
