A Comprehensive Review on Picric Acid: Synthesis, Properties, and Applications

2,4,6-trinitrophenol, the formal name for picric acid, is a highly reactive, multipurpose substance that finds extensive use in a wide range of scientific and industrial fields. Its synthesis, physicochemical characteristics, and various applications are thoroughly examined in this paper. With an emphasis on its functions as a potent explosion, a synthetic colour, and a crucial step in the synthesis of organic compounds, the chemical structure, stability, and reactivity of picric acid are examined. Recent developments have demonstrated its use in bioanalytical methods, electrochemical sensing, and the creation of innovative functional materials, in addition to its conventional uses. Because of its distinct chemical interactions, the substance has been used more and more in analytical chemistry to detect metal ions and biomolecules. Furthermore, interest in its potential in biomedical and pharmaceutical research is growing, especially in the areas of toxicity investigations and medication development. Despite its advantages, picric acid presents serious risks to human health and the environment because of its extreme toxicity, explosiveness, and potential for unintentional detonation if kept incorrectly. In order to reduce risks in industrial and laboratory settings, the evaluation also covers best practices for handling, storing, and disposing of materials. This publication is a useful resource for scholars, chemists, and industrial practitioners dealing with picric acid by combining previous studies and upcoming trends. It seeks to shed light on the benefits and drawbacks of this substance while investigating novel uses that could spur further developments in chemistry, materials science, and pharmaceutical research.