Ammonium chloride is widely used in various industrial and medical applications. In the pharmaceutical industry, it serves as an expectorant in cough medicines, helping to clear mucus from the respiratory tract. It is also utilized in the production of dry cell batteries, where it acts as an electrolyte to facilitate the flow of ions. In the food industry, it is employed as a yeast nutrient in baking and as a flavoring agent in licorice. Additionally, it is used in metalwork as a flux in soldering and tin coating, as it helps clean metal surfaces by removing oxide layers. In agriculture, it is sometimes applied as a nitrogen source in fertilizers to promote plant growth. Its versatile properties make it a valuable compound across multiple fields.