The chemical compound potassium chloride (KCl) 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. 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, 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% |
| Solubility | Freely soluble in water, practically insoluble in ethanol |
| Heavy Metals (as Pb) | =< 1mg/ kg |
| Arsenic | =< 0.5mg/ kg |
| Ammonium (as NH﹢4) | =< 100mg/ kg |
| Sodium Chloride | =< 1.45% |
| Water Insoluble Impurities | =< 0.05% |
| Water Insoluble Residue | =<0.05% |
Typical values, shown for guidance. Confirm the exact specification with our sales team before ordering.
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