Used primarily in organic synthesis, this compound acts as a nitrosating agent, introducing nitroso groups into organic molecules. It is particularly valuable in the preparation of nitrosamines, which are studied for their biological activities and potential applications in pharmaceuticals. Additionally, it serves as a reagent in the development of dyes and pigments, where nitrosation is a key step in the chemical process. Its use is also noted in research settings for exploring reaction mechanisms involving nitrosation.