Used primarily in research settings to study the environmental impact and toxicology of polychlorinated biphenyls (PCBs). It serves as a reference compound in analytical chemistry for detecting and quantifying PCB contamination in environmental samples such as soil, water, and air. Also employed in toxicological studies to understand the health effects of PCB exposure, including its potential role in endocrine disruption and carcinogenicity. Additionally, it aids in the development of remediation techniques for PCB-contaminated sites.