What is Molybdenum Disulfide?

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Apr 5, 2023 ,

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Introduction to Molybdenum Disulfide Pulver Molybdenum disulfide is a type of inorganic. MoS2, which is molybdenite’s main component, has the chemical formula MoS2. It is a solid black powder with a metallic luster. It has a melting temperature of 2375, a density 4.80g/cm3 (14), Mohs hardness 1.0 1.5.
Molybdenum disulfide decomposes at 1370, and then to molybdenum metallic and sulfur at 1600. Molybdenum disulfide can be oxidized at 315 when it is heated in air. Molybdenum sulfide can’t be dissolved in water, dilute or concentrated sulfuric acids. At 400, slow oxidation takes place and molybdenum dioxide forms.
Molybdenum disulfide The molybdenum pentachloride can be formed by heating it with chlorine gas.
Molybdenum disulfide reacts to alkyl-lithium under control to create an embedded compound (intercalated compounds) LixMoS2. If it reacts to butyllithium, then the product is LiMoS2.
Molybdenum disulfide Copper has a high level of active sulfur. It is easy to cause copper to corrosion. This topic has been covered in numerous papers and books on lubricant ingredients. Additionally, when copper alloys and parts require lubrication, it’s not necessary to use lubrication products containing molybdenum diulfide. You also need an anti-copper agent.

Molybdenum Disulfide Pulp Powder’s Physical Chemistry
Molybdenum disulfide It is insoluble with water and dilute acids. It can also be corroded if heated concentrated hydrochloric, concentrated sulfuric, concentrated nitric, boiling concentrated chloric acid, aqua regia or pure oxygen, fluorine, or chlorine are used. It is insoluble with other bases, solvents and petroleum, as well as synthetic lubricants. It is non-magnetic and has semiconductor properties. Molybdenum dioxide mo-S edges are quite numerous, easy to peel among layers, and have good anisotropy. They have strong adhesion to metal and can adhere to any metal surface. The lubricant molybdenum dioxide is high in compressive strength, wear resistance, excellent adhesion (0.03-10.08), film structures characteristics, and stable under high pressure. It can also be used under high temperatures (1200), low temperatures (-190), high speeds, high pressure, ultralow temperature, and high vacuum. At 400, molybdenum dioxide begins to oxidize and becomes molybdenum triglyceride. It oxidizes rapidly to molybdenum triglyceride above 540. It was sublimated to 450 in an atmosphere of inertia, then decomposed to molybdenum at 1370. At 1600, it was decomposed into sulfur and molybdenum. By controlled reaction of alkyl lithium and molybdenum dioxide, it was formed into molybdenum penichloride. Low toxicity.
Molybdenum Disulfide Powder Properties
Other Names Molybdenum Disulfide (Molybdenum Sulfide), MoS2
CAS No. 1317-33-5
Formula compound MoS2
Molecular Weight 160.07g/mol
Appearance Solid in black/leadgray
Melting Point 2,375 degC (4,307 degF; 2,648 K)
Boiling Point N/A
Density 5.06g/cm3
Solubility of H2O Insoluble
Exact Mass N/A
Molybdenum Disulfide MoS2 MoS2 powder CAS 1317-33-5

Molybdenum Disulfide Pulver Preparation Methods
Natural law
Molybdenum dioxide has many applications and great properties. Therefore, nano-mos2 preparation and application have been extensively studied both at home and abroad.
MoS2 can be prepared using the natural molybdenite concentration purification method. This method removes acid insoluble matter, SiO2, Fe Cu, Ca, Cu, Pb, and other impurities from molybdenite concentration after a certain physical and chemical activity. Next, refine the process to create nano-mos2. This is how the Us Climax Molybdenum firm produces MoS2. This method is suitable for the production of lubricants because it preserves the MoS2 crystal form. However, the purity and purification of nano MoS2 made by the natural method is low. If the temperature drops below 400 degrees it is recommended that you use a low-cost MoS2 for normal conditions. It is not possible to lubricate the MoS2 with a lower lubrication level than 1300.

Chemical synthesis
The synthesis process can produce sulfide in high purity, with few impurities and fine particles, and can meet different functional requirements. This is why the synthesis procedure to make nano sulfide was so important. There are many ways to make nano-MOS2, including the thermal decomposition technique of ammonium triathiomolybdate and hydrogen sulfide reduction methods, high-energy ball grinding method, carbon nanotubes space-limiting method, hydrothermal synthesizing method, and high-energy physical or chemical means. Two preparation methods can be used to make nano-mos2: The tungsten source/molybdenum can be directly mixed with the source of sulfur, or the tungsten and molybdenum can be combined with sulfur to create the precursor body. Then, the precursor can be reduced or decomposed to MoS2 with the appropriate methods.

Molybdenum Disulfide Powder – Applications
1. Dry-film lubricants . Molybdenum-disulfide is used in most dry film lubricants (epoxy resin type EM-1 dry film) except when black fillers are not indicated. Molybdenum-disulfide dry-film lubricants that are most commonly used are the United States military dry films MIL L-3987 and MIL L-23398. Dry film lubricant can be used to lubricate bearings, gears, and other civil products.
2. Lubricants . Molybdenum sulfide ointment generally is added to oil and fat with a mole fraction of around 4%. It has been used successfully in the fields of metallurgy and steel rolling, as well as mining machinery and equipment for coal mining. Some high-temperature, open air, field, and tunnel application equipment makes it difficult to grease or supplement equipment.
3. Lubricating film-forming glue for wheels, rails and gear . The film-forming powder is widely used for lubrication of the gear of locomotive drive shafts. You can extend the life of rail by applying film-forming paste to rail and rim. Rim life can be increased 7 times and electricity or fuel saved about 7%.

Main supplier of Molybdenum Disulfide Pulver
Technology Co. Ltd. is a trusted global supplier and manufacturer of chemical materials. We have more than 12 years experience in providing high-quality chemicals, nanomaterials, and zinc sulfide.
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