Ammonium sulfate is a white crystalline salt with the chemical formula (NH4)2SO4, commonly used in agriculture as a nitrogen-rich fertilizer. Its high nitrogen content makes it an excellent source of plant nutrients, promoting healthy growth and improved crop yields. It is also utilized in industrial applications such as food processing, water treatment, and flame retardant production. Ammonium sulfate can be applied directly to soil or mixed with other fertilizers, making it a versatile and valuable resource for enhancing plant nutrition and soil quality in agriculture.