The starch indicator is widely used in analytical chemistry, particularly in iodometric titrations. It serves as a visual indicator to detect the presence of iodine or the endpoint of a titration involving iodine. When iodine is present, the starch indicator forms a deep blue-black complex, making it easy to identify the completion of the reaction. This property is especially useful in determining the concentration of oxidizing or reducing agents in various solutions. Additionally, it is employed in food science to test for the presence of iodine in salt and other food products. Its simplicity and effectiveness make it a staple in laboratory settings for accurate and reliable results.