With the chemical formula (NH4)2SO4, ammonium sulphate is a popular inorganic salt utilised in a variety of industries. It has the appearance of a white, crystalline powder and is very water soluble. Ammonium sulphate is used in agriculture as a nitrogen fertiliser to supply vital minerals for plant growth. It has uses as a food additive and as a protein precipitant in the pharmaceutical and food industries. Additionally, it serves as a flame retardant in fire extinguishers and in water treatment procedures. Ammonium sulphate is essential to many industrial processes and helps produce higher-yielding crops and goods of higher quality. However, excessive use might cause environmental issues including soil acidity.