Ammonium bisulfate is widely used in various industrial applications due to its acidic properties. It is commonly employed in the production of fertilizers, where it acts as a source of nitrogen and sulfur, essential nutrients for plant growth. In the textile industry, it serves as a dye fixative, helping to improve the colorfastness of fabrics. It is also utilized in metal cleaning and pickling processes to remove oxides and scales from surfaces. Additionally, ammonium bisulfate finds use in water treatment as a pH adjuster and in the manufacturing of fire retardants. Its versatility makes it a valuable compound in multiple sectors.