1-Iodopropane is primarily used as an alkylating agent in organic synthesis, where it introduces the propyl group into various compounds. It is commonly employed in the preparation of pharmaceuticals, agrochemicals, and other specialty chemicals. In research laboratories, it serves as a reagent for nucleophilic substitution reactions, enabling the formation of carbon-carbon or carbon-heteroatom bonds. Additionally, it is used in the synthesis of organoiodine compounds, which are valuable intermediates in medicinal chemistry. Its application extends to the production of surfactants and lubricants, where it acts as a precursor in the modification of molecular structures.