Ammonium sulfate is widely used in agriculture as a fertilizer due to its high nitrogen and sulfur content, which are essential nutrients for plant growth. It is particularly effective in alkaline soils, as it helps lower the pH, improving nutrient availability. In the industrial sector, it serves as a flame retardant in textiles and wood products by promoting char formation and reducing flammability. Additionally, it is utilized in the production of biopharmaceuticals for protein purification through precipitation. In water treatment, it aids in the removal of impurities by acting as a coagulant. It also finds application in the food industry as a dough conditioner and nutrient source for yeast in baking.