Ammonium sulfate is an inorganic compound with the formula (NH4)2SO4. It is commonly used as a fertilizer for alkaline soils, a flame retardant, in the preparation of other ammonium salts, and as a food additive.

Ammonium sulfate is a white crystalline solid that is highly soluble in water. It’s composed of two ammonium ions (NH4+) and one sulfate ion (SO4^2-). Here are some key uses and properties:

1. Fertilizer: Ammonium sulfate is widely used as a nitrogen fertilizer in agriculture. It provides an excellent source of both nitrogen and sulfur, two essential nutrients for plant growth. The sulfate component also helps to lower the pH of alkaline soils, making it suitable for crops that prefer acidic conditions.

2. Industrial Applications: Besides agriculture, it has various industrial applications. For example, it’s used in the production of other ammonium compounds, such as ammonium nitrate and ammonium phosphate. It’s also used in the manufacturing of flame retardants, dyes, and pharmaceuticals.

3. Food Additive: In the food industry, ammonium sulfate is sometimes added to bread products to strengthen the dough and improve its texture. It’s generally recognized as safe (GRAS) by the FDA when used in accordance with good manufacturing practices.

4. Chemical Reagent: Ammonium sulfate is used as a chemical reagent in various laboratory experiments and processes. It’s often used for protein precipitation, as it helps to selectively precipitate proteins from solution.

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