Used as a reference standard in environmental testing laboratories to calibrate instruments and validate analytical methods for detecting 2,4-dichlorophenol in water, soil, and wastewater samples. Commonly applied in gas chromatography (GC) and high-performance liquid chromatography (HPLC) to ensure accurate quantification of chlorophenol contaminants. Also utilized in research studies focusing on pesticide degradation, as 2,4-dichlorophenol is a metabolite of certain herbicides. Its presence in ecosystems is monitored due to toxicity to aquatic life and potential health risks, making the standard solution essential for compliance with environmental regulations.