Molybdenum(IV) sulfide is used as a catalyst in the electrolysis of water. It is employed as a cocatalyst for desulfurization in petrochemistry especially hydrodesulfurization. It is also used as a component of photoelectrochemical and microelectronics applications. Further, it is useful as a filament material in many electrical applications. It finds application as a lubricant in aircraft engines. Polymers consisting of molybdenum(IV) sulfide such as nylon, teflon and vespel posses improved strength and reduced friction.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.