Used primarily as an intermediate in the production of herbicides, particularly 2,4-D (2,4-dichlorophenoxyacetic acid), a widely used broadleaf weed killer in agriculture and lawn care. Also serves as a precursor in the synthesis of other chlorinated compounds, including certain dyes, antiseptics, and wood preservatives. Found in some antimicrobial formulations due to its biocidal properties. Occasionally used in laboratory settings as a reference standard or reagent in environmental testing for chlorophenol contamination. However, due to its toxicity and potential for bioaccumulation in the environment, its use is strictly regulated.