Thiocarbohydrazide is widely used in analytical chemistry as a reagent for the detection and determination of various metal ions, including copper, lead, and cadmium. Its ability to form stable complexes with these metals makes it valuable in spectrophotometric and gravimetric analysis. In the field of organic synthesis, it serves as a key intermediate for the preparation of heterocyclic compounds, such as thiadiazoles and triazoles, which have applications in pharmaceuticals and agrochemicals. Additionally, thiocarbohydrazide is employed in the textile industry as a mordant in dyeing processes, enhancing the color fastness of fabrics. Its use in the synthesis of polymers and resins also contributes to the development of materials with improved thermal and chemical stability.