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The chemical formula of potassium chloride is KCl, which is a colorless slender rhombic or cubic crystal, or a white crystalline powder with small particles, odorless and salty taste.

Potassium chloride is a colorless, slender, rhombic or cubic crystal, or white crystalline powder with small particles, which is extremely salty, tasteless and nontoxic. Soluble in water, ether, glycerol and alkali, slightly soluble in ethanol, but insoluble in anhydrous ethanol, hygroscopic and easy to agglomerate; The solubility in water increases rapidly with the increase of temperature, and plum and sodium salt often double decompose to form new potassium salt.

Density: 1.98 (liter at 25℃. ); (ignite. ); Melting point: 770 degrees Celsius (liter. ); Boiling point:1420℃; ; Water solubility: 342g/L (20? c)； Storage conditions: 2-8? C.

Potassium chloride was replaced by metallic sodium at 850℃: Kcl+Na=K+Nacl. This is a reversible reaction, which is beneficial to the reversible reaction in thermodynamic properties, because when potassium reaches the boiling point temperature of 774℃, it becomes potassium vapor, which is beneficial to the right shift of the reaction direction.

Electrolytic potassium chloride solution is used to prepare caustic potash, chloride ions that can be precipitated by silver ions and potassium ions that can be precipitated by sodium tetraphenylborate. Potassium chloride reacts with concentrated sulfuric acid to produce potassium bisulfate and hydrogen chloride: H? 2? So what? 4? +Kcl=KHSO？ 4? +hydrochloric acid. It can also be used as an organic reaction.