Ammonium chloride has several major uses across a variety of industries, including:

1. Agriculture: Ammonium chloride is used as a nitrogen fertilizer in agriculture, particularly in rice cultivation, to enhance crop yield.
2. Industrial processes: It is used as a flux in metalworking, such as in the manufacturing of electronics, where it is used as a soldering agent.
3. Food industry: It is used as a food additive to regulate acidity levels and act as a leavening agent in bread and baked goods.
4. Pharmaceutical industry: Ammonium chloride is used in medicine as an expectorant to help clear mucus from the respiratory system.
5. Animal nutrition: It is used as an ingredient in animal feed to provide a source of nitrogen.
6. Laboratory use: Ammonium chloride is used as a reagent in various laboratory applications, such as in the synthesis of other chemicals and in pH testing.
7. Cleaning products: It is used as a cleaning agent and in the production of some types of detergent.