Acetone 2,4-Dinitrophenylhydrazone is primarily used as a reference standard in analytical chemistry for the identification and quantification of carbonyl compounds, especially acetone-derived derivatives. It is the colored hydrazone product formed from the reaction of acetone with 2,4-dinitrophenylhydrazine, which can be detected and measured using spectrophotometric, chromatographic, or other techniques. This makes it essential in research, environmental monitoring, and quality control laboratories for confirming the presence and concentration of acetone or similar ketones in samples. Additionally, it serves as an intermediate in the synthesis of various organic compounds, aiding in the development of pharmaceuticals, agrochemicals, and other fine chemicals.