Used as an analytical reagent for the detection and separation of certain metal ions, particularly in qualitative inorganic analysis. It functions as a selective precipitating agent due to its ability to form insoluble complexes with heavy metal ions such as mercury, lead, and copper. Its thioamide group enhances coordination with soft metal centers, making it useful in hydrometallurgy and environmental monitoring for metal recovery and pollutant removal. Also investigated as an intermediate in the synthesis of heterocyclic compounds with potential biological activity.