Used as a pH indicator in various analytical and laboratory applications, it helps determine the acidity or alkalinity of solutions. Commonly employed in titrations to detect endpoint changes, especially in complexometric titrations involving metal ions like aluminum, bismuth, and zinc. It is also utilized in biochemical research for studying enzyme activities and metal ion interactions. In environmental testing, it aids in monitoring water quality by detecting metal contaminants. Its color change from yellow to violet within a pH range of 7.0 to 9.0 makes it a reliable tool for pH-sensitive experiments.