Tungsten disulfide is gray fine particles or nano powder. It is a metal sulfide, which has property of semiconductor and diamagnetism. It is insoluble in water and alcohol, however dissolve in acid mixture of nitric acid and hydrofluoric acid and molten alkali. Tungsten(IV) sulfide is table at room temperature and pressure. Tungstic acid or tungsten is the raw material.
Tungsten sulfide is a layered transition metal dichalcogenide with outstanding lubricating properties, excellent thermal stability, and unique electronic characteristics. Known for its versatile applications, WS2 has become an essential material in industries such as lubrication, electronics, and catalysis, especially where high performance under extreme conditions is required.
Tungsten Disulfide
| CAS No.:12138-09-9 | EINECS No.:235-243-3 | Molecular Formula:WS2 | Molecular Weight:247.97 |
| Melting Point:1250℃ | Density:7.5 |
Applications
Tungsten(IV) sulfide is a new solid lubricant, which apply to lubricate at high temperature, high pressure, high load and high vacuum condition. When it adds in engineering plastics, self-lubricating parts turn out.
When mix it with some volatile solvent and spraying in metal surface, it can improve the service life of mould in impact forging and degree of finish of workpieces.
In the field of lubrication, tungsten sulfide is highly valued as a solid lubricant. Its layered structure allows for low friction and exceptional lubricating performance, particularly in high-temperature and high-pressure environments where conventional oils and grease break down. WS2 is widely used in aerospace, automotive, and industrial applications where durability and stability are critical, helping to improve the lifespan and efficiency of machinery operating under intense conditions.
In electronics, tungsten sulfide’s semiconductor properties make it suitable for transistors, thin-film electronics, and flexible devices. With its ability to conduct electricity while maintaining stability under high temperatures, WS2 is ideal for advanced electronic devices that demand both reliability and performance. Additionally, it is being researched as a material for next-generation flexible and wearable electronics, opening up possibilities for lightweight, adaptable electronic components.
In catalysis, WS2 serves as an effective catalyst in chemical reactions, especially in hydrodesulfurization, a process used to remove sulfur from fossil fuels. Its catalytic properties make it valuable for clean energy production and environmental applciations, as it helps reduce harmful emissions by enabling cleaner fuel processing. Additionally, WS2 is being explored for catalytic applications in hydrogen evolution reactions, supporting advancements in green hydrogen production.