Widely used as a biocide and preservative due to its antimicrobial properties, especially in industrial water systems and wood treatments to prevent fungal and bacterial growth. Employed as an intermediate in the synthesis of flame retardants, such as 2,4,6-tribromophenyl allyl ether, which are added to plastics, textiles, resins, and electronic materials to reduce flammability. Also utilized in the manufacture of other brominated compounds used in disinfectants and antiseptics. Its ability to disrupt microbial cell functions makes it effective in controlling slime formation in paper mills and cooling towers. Due to environmental persistence and toxicity concerns, its use is regulated in many regions.