Ammonium sulfate is a chemical compound with the formula (NH4)2SO4. It is a white crystalline solid that is highly soluble in water. This compound is commonly used as a fertilizer in agriculture because it provides essential nitrogen and sulfur nutrients to plants, promoting healthy growth. In addition to its agricultural uses, ammonium sulfate is also utilized in various industrial applications, such as in the production of certain types of dyes and in the food industry as a food additive. Its ability to enhance protein solubility makes it valuable in biochemical research and laboratory settings.