Used as a reference standard in analytical laboratories for the detection and quantification of 1-naphthylamine in environmental, industrial, and biological samples. Commonly employed in chromatographic techniques such as HPLC and GC-MS to ensure accurate identification and measurement of amine contaminants. Also utilized in quality control processes for dye, pesticide, and rubber manufacturing industries where 1-naphthylamine may be present as an intermediate or byproduct. Helps maintain compliance with safety and regulatory standards by enabling precise monitoring of exposure levels.