Pyrocatechol Violet is widely used as a metallochromic indicator in complexometric titrations, particularly for the determination of metal ions such as aluminum, beryllium, and zirconium. Its ability to form distinct color changes with these metals makes it valuable in analytical chemistry for endpoint detection. Additionally, it is employed in spectrophotometric methods for the quantitative analysis of metal concentrations in various samples, including water, soil, and biological materials. In biochemistry, Pyrocatechol Violet is utilized to study metal-binding proteins and enzymes, aiding in understanding their structure and function. Its application extends to industrial processes, where it serves as a chelating agent in metal extraction and purification.