This chemical, commonly known as Gibb's reagent, is primarily used as a reagent in analytical chemistry for the detection and determination of phenols, aminophenols, and primary aromatic amines. It is particularly effective in colorimetric assays, where it reacts specifically with these compounds to produce a measurable and distinct color change. This property makes it valuable in biochemical and pharmaceutical research for identifying and quantifying analytes. Additionally, it is employed in the synthesis of organic compounds, serving as a building block in the production of more complex molecules in the pharmaceutical and chemical industries. Its stability and reactivity under controlled conditions make it a reliable choice for laboratory applications.