Used as a strong oxidizing agent in analytical chemistry, particularly in redox titrations for the determination of reducing agents like iron(II), arsenic(III), and other metal ions. Its high stability and well-defined oxidation potential make it suitable for standardizing solutions and calibrating instruments. Also employed in electrochemical studies and as a catalyst in certain organic oxidation reactions. Due to its ability to undergo reversible Ce(IV)/Ce(III) redox transitions, it finds use in synthesis and environmental applications where controlled oxidation is required.