Used primarily as a reference standard in environmental testing to detect and quantify halogenated organic contaminants in soil, water, and air samples. Plays a role in analytical chemistry for calibrating instruments like gas chromatographs and mass spectrometers, especially in studies related to chlorinated aromatic compounds. Also used in research settings to understand the behavior and degradation of persistent organic pollutants. Its stability and distinct structure make it suitable for tracing contamination pathways in ecosystems.