Acetoacetic acid sodium salt is widely used in organic synthesis as a reagent for the preparation of various chemical compounds. It serves as a key intermediate in the production of pharmaceuticals, particularly in the synthesis of antiepileptic drugs and other therapeutic agents. In the agrochemical industry, it is utilized in the formulation of pesticides and herbicides. Additionally, it plays a role in the manufacture of dyes and pigments, contributing to the coloration of textiles and other materials. Its application extends to the field of biochemistry, where it is used in enzymatic studies and metabolic research.