Used as a corrosion inhibitor in cooling water systems and industrial recirculating water to protect metal surfaces, especially in heat exchangers and pipelines. Serves as a precursor in the production of other chromium compounds, including pigments and catalysts. Employed in the tanning of leather to improve durability and resistance to microbial attack. Applied in water treatment to passivate metal surfaces and reduce oxidation. Also utilized in some electroplating processes to enhance coating adhesion and uniformity. Due to its oxidizing properties, it plays a role in chemical synthesis where controlled oxidation is required.