Widely used in the mining industry as a flotation agent to separate sulfide ores from gangue minerals, particularly for copper, lead, nickel, and zinc ores. It selectively binds to metal sulfide surfaces, making them hydrophobic so they can attach to air bubbles and be collected in froth. Also used in the production of rubber chemicals, as an intermediate in organic synthesis, and in certain wastewater treatment processes to precipitate heavy metals. Its effectiveness in promoting selective separation makes it valuable in mineral processing operations.