Used primarily in environmental and analytical chemistry as a reference standard for the detection and quantification of DDT and its metabolites in various samples. It plays a crucial role in monitoring pesticide residues in soil, water, and food products to ensure compliance with environmental regulations and safety standards. Additionally, it is employed in research studies to understand the degradation pathways and environmental impact of organochlorine pesticides. Its application is essential in assessing contamination levels and developing strategies for remediation in affected ecosystems.