N-Allylthiourea is primarily used as a corrosion inhibitor in various industrial applications, particularly effective in protecting copper and its alloys from corrosion in environments such as cooling water systems, boiler feedwater, and acidic pickling solutions. It forms a protective layer on the metal surface, preventing oxidation and extending equipment lifespan.

In addition to corrosion inhibition, N-Allylthiourea serves as a reagent in chemical research for synthesizing organic compounds, acting as a building block in the production of pharmaceuticals, agrochemicals, and specialty chemicals. Its nucleophilic properties make it valuable in organic synthesis reactions.

It is also employed in analytical chemistry as a complexing agent for the detection and quantification of metal ions, such as copper, in environmental monitoring and quality control.

Furthermore, N-Allylthiourea is utilized in biochemical studies as a potent inhibitor of the enzyme urease, aiding research in microbiological and enzymatic processes.

Overall, N-Allylthiourea is a versatile specialty chemical contributing to industrial maintenance, synthesis, analysis, and biochemical applications.