Used primarily as a reactive diluent and crosslinking agent in epoxy resin systems, enhancing flexibility and adhesion in coatings, adhesives, and sealants. Its chlorinated structure contributes to flame retardancy, making it suitable for electrical encapsulation and insulation materials. Also employed in the synthesis of specialty polymers and as an intermediate in organic reactions where controlled solubility and reactivity are required. Due to its toxicity, handling requires strict safety controls, limiting use to industrial applications with proper containment.