Used primarily as a presumptive test for detecting the presence of primary amines, especially in forensic and analytical chemistry. Commonly applied in drug testing to identify hallucinogenic substances like LSD, DMT, and other tryptamines. When exposed to these compounds, the reagent produces a characteristic color change, typically ranging from blue to purple, aiding in rapid field identification. Also utilized in biochemical research to distinguish between different classes of amines based on color response. Its simplicity and fast reaction make it valuable for preliminary screening despite limitations in specificity.