Used primarily in organic synthesis as a reagent for introducing the chlorothionoformate group into molecules. It is particularly valuable in the preparation of thiocarbamates and thiocarbonates, which are intermediates in the production of agrochemicals and pharmaceuticals. The compound is also employed in the modification of polymers and resins to enhance their properties, such as thermal stability and chemical resistance. Additionally, it serves as a key building block in the synthesis of heterocyclic compounds, which have applications in medicinal chemistry and material science. Its reactivity with amines and alcohols makes it a versatile tool in the development of novel chemical entities.