Ammonium sulfate is widely used as a fertilizer in agriculture 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 food industry, it serves as a dough conditioner and stabilizer in baked goods. Additionally, it is utilized in water treatment processes to purify drinking water and remove impurities. In the textile industry, it acts as a flame retardant for fabrics. It also finds application in chemical laboratories as a precipitating agent for protein purification.