Widely used as a biocide in industrial water systems, particularly in oilfield operations to control bacterial growth in drilling fluids and completion fluids. It effectively inhibits sulfate-reducing bacteria, which can cause corrosion and souring of wells. Also employed as a preservative in hydraulic fracturing fluids due to its stability under high salinity and temperature conditions. Additionally, it serves as an intermediate in the synthesis of dyes and other brominated compounds. Its strong antimicrobial action makes it suitable for use in slimicides for the pulp and paper industry.