Used primarily as an intermediate in the synthesis of herbicides and other chlorinated compounds. It serves in the production of selective phenoxy herbicides, which are effective against broadleaf weeds in agriculture. Also utilized as a biocide in wood preservatives and industrial cooling systems to prevent microbial growth. Has been employed in the formulation of antifouling paints for marine vessels. Its high chlorine content contributes to its stability and effectiveness in harsh environments. Due to environmental persistence and toxicity, its use is restricted in many regions.