2-Imidazolidinetione is primarily used in the synthesis of pharmaceuticals and agrochemicals. It serves as a key intermediate in the production of various drugs, particularly those targeting bacterial and fungal infections. In agriculture, it is utilized in the development of herbicides and pesticides, helping to protect crops from pests and diseases. Additionally, it finds application in the manufacture of dyes and pigments, contributing to the coloration of textiles and other materials. Its role in organic synthesis is also notable, where it acts as a building block for more complex chemical compounds.