Chloroacetonitrile is primarily used as an intermediate in the synthesis of various pharmaceuticals and agrochemicals. It plays a crucial role in the production of active ingredients for drugs, particularly in the development of antiviral and antifungal medications. Additionally, it serves as a building block in the manufacture of herbicides and pesticides, contributing to crop protection and agricultural productivity. In organic chemistry, it is utilized as a reagent for introducing the cyano group into molecules, enabling the creation of complex chemical structures. Its applications also extend to the synthesis of dyes and other specialty chemicals, where it acts as a key precursor. However, it is highly toxic and requires careful handling to avoid health risks from contact or inhalation.