Reinecke Salt Monohydrate is widely used in analytical chemistry for the detection and quantification of amines, amino acids, and alkaloids. It forms insoluble complexes with these compounds, making it useful for precipitation and separation processes. In biochemistry, it is employed to isolate and purify proteins and peptides by selectively binding to specific functional groups. Additionally, it serves as a reagent in the identification of certain metal ions, such as cobalt and nickel, due to its ability to form colored complexes. Its applications extend to forensic science, where it aids in the analysis of organic compounds in criminal investigations.