Used primarily in research related to environmental pollutants and toxicology, this compound serves as a model substance for studying the behavior and effects of polychlorinated biphenyls (PCBs) in ecosystems. It helps scientists assess persistence, bioaccumulation, and toxicity in wildlife and laboratory settings. Due to its structural stability and chlorine content, it is also used to investigate metabolic pathways and enzyme interactions, particularly those involving cytochrome P450. Not used in commercial products due to high toxicity and environmental concerns.