What is Tungsten Disulfide Powder?

Author : Trunnano

Update time : 2022-03-16 18:10:54

What is Tungsten Disulfide Powder?
Tungsten disulfide is an inorganic compound with a molecular formula of WS2 and a molecular weight of 247.97. It is a fine crystal or powder with a gray metallic luster, belonging to the hexagonal crystal system, with semiconducting and diamagnetic properties. The natural mineral is tungstenite. Layered structure, easy to dissociate, with lubricating properties similar to graphite. Used as a lubricant, eg in aerosols.
The main features of Tungsten Disulfide Powder
Tungsten disulfide is a compound of tungsten and sulfur, with chemical formula WS2 and molecular weight of 247.97. It is a black-gray powder. It appears as tungstenite in nature and is a dark gray orthorhombic crystalline solid. The relative density is 7.510. Slightly soluble in cold water, soluble in hot water [2] . Insoluble in hydrochloric acid and alkali (except for the mixture of concentrated nitric acid and hydrofluoric acid). Soluble in molten alkali, insoluble in alcohol. Density 7.6g·cm-3. It has reducibility and can react with hot concentrated sulfuric acid, nitric acid, aqua regia and other strong oxidants, and can be converted into WO3 when heated in air or oxygen. [1] When heated to 1250℃ in vacuum, it decomposes into tungsten and sulfur. In a dry stream of pure nitrogen, the mixture of tungsten trisulfide and sulfur is co-heated to 900°C to sublime the excess sulfur, and the residue is tungsten disulfide.

Tungsten Sulfide Properties
Other Names	tungsten sulfide (WS2), tungsten disulphide, tungsten(IV) sulfide, WS2 powder
CAS No.	12138-09-9
Compound Formula	WS2
Molecular Weight	247.97
Appearance	Gray to Black Powder
Melting Point	1250 °C
Boiling Point	N/A
Density	7.5 g/cm3
Solubility in H2O	N/A
Exact Mass	247.895074

Tungsten Disulfide WS2 Powder CAS 12138-09-9

The applications of Tungsten Disulfide Powder
Can be used as lubricant. Better performance than molybdenum disulfide, lower friction coefficient and higher compressive strength. It is used alone for high temperature, high pressure, high speed, high load, and equipment running in chemically active media. Forging and stamping lubricants formulated with other materials can prolong the life of the die and improve the finish of the product. Filler material formulated with polytetrafluoroethylene and nylon for self-lubricating parts.
The supplier of Tungsten Disulfide Powder
Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional sulfide powder supplier with over 12 years of experience in chemical products research and development. We accept payment via Credit Card, T/T, West Union, and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
If you are looking for high-quality boron carbide powder, please feel free to contact us and send an inquiry.

Previous : What is Bismuth Sulfide Powder?

Next : What is Magnesium Nitride Powder?