Widely used as an oil additive, particularly in lubricants and greases, to enhance extreme pressure (EP) and anti-wear performance. It functions effectively under high-load and high-temperature conditions by forming a protective sulfur-rich film on metal surfaces, reducing friction and preventing metal-to-metal contact. Commonly found in industrial gear oils, engine oils, and metalworking fluids. Offers good thermal stability and compatibility with other additives, making it suitable for use in complex formulations. Also utilized in some synthetic lubricant systems where oxidative stability and long service life are required.