Used as a chelating agent in analytical chemistry for the selective binding and determination of metal ions, particularly in spectrophotometric and potentiometric methods. Its structure allows for strong complexation with transition metals such as copper(II), nickel(II), and cobalt(II), making it valuable in separation techniques and environmental monitoring of heavy metals. Also employed in the synthesis of functionalized materials and sensors where controlled metal ion interaction is required. Shows utility in coordination chemistry for designing metal-organic frameworks and catalysts due to its stable bidentate or tridentate binding modes.