Used primarily as a reagent in analytical chemistry for the detection and quantification of aldehydes and ketones. It forms colored complexes with these compounds, making it useful in spectrophotometric analysis. Commonly applied in environmental testing to measure formaldehyde levels in air and water samples. Also employed in biochemical research for studying carbonyl compounds in biological systems. Its sensitivity and specificity make it a valuable tool in quality control processes in various industries, including pharmaceuticals and food safety.