கொஞ்சம் கெமிஸ்ட்ரி ! - EP.004

 

Chemical Properties

• Formula: KCl

• Molar Mass: 74.55 g/mol

• Appearance: White crystalline solid

• Odor: Odorless

• Density: 1.984 g/cm³

• Melting Point: 770 °C (1,420 °F)

• Boiling Point: 1,420 °C (2,590 °F)

• Solubility: Soluble in water, glycerol, and alkalies; slightly soluble in alcohol; insoluble in ether

• Acidity (pKa): ~7

• Refractive Index: 1.4902 (589 nm)

• Crystal Structure: Face-centered cubic

Uses

• Fertilizer: Potassium chloride is widely used as a fertilizer, known as potash, to provide essential potassium for plant growth.

• Medical: Used to treat or prevent low levels of potassium (hypokalemia) in the human body. It is essential for proper functioning of the heart, muscles, kidneys, and nervous and digestive systems.

• Industrial: Employed in various industrial processes, including water softening and food processing.

• Food Additive: Used as a salt substitute in food, especially for people with high blood pressure.

Safety and Hazards

• Main Hazards: Causes serious eye irritation.

• NFPA 704 (Fire Diamond): 1 (Health), 0 (Flammability), 0 (Reactivity)

• Lethal Dose (LD50): 2,600 mg/kg (oral, rat)

Pharmacology

• Routes of Administration: Oral, intravenous (IV), intramuscular (IM)

• ATC Code: A12BA01 (WHO), B05XA01 (WHO)

• Excretion: Primarily through the kidneys (90%), with some excretion through feces (10%)

Production

• Natural Sources: Potassium chloride can be extracted from minerals such as sylvite and carnallite, as well as from seawater.

• Industrial Production: Produced as a by-product during the synthesis of nitric acid from hydrochloric acid and potassium nitrate. It can also be prepared by reacting potassium hydroxide with hydrochloric acid.

Environmental Impact

• Biodegradability: Potassium chloride is not biodegradable but is generally considered safe for the environment when used appropriately.