Molybdenum Disulfide MoS2 Powder CAS 1317-33-5

What is Molybdenum Disulfide MoS2？
Molybdenum disulfide is an inorganic compound composed of molybdenum and sulfur. Molybdenum disulfide chemical formula is MoS2.
Like most mineral salts, Moly disulfide has a high melting point but begins to sublime at a relatively low 450ºC. This property is useful for purifying compounds.
 
This compound is classified as a transition metal dihalide. Moly sulfide is a silver-black solid in the form of molybdenite (the main ore of molybdenum). MoS2 is relatively unreactive. It is not affected by dilute acid and oxygen. In appearance and feel, molybdenum disulfide is similar to graphite. Because of its low friction and robustness, it is widely used as a dry lubricant. Bulk MoS2 is a diamagnetic, indirect bandgap semiconductor similar to silicon, with a bandgap of 1.23 eV.
 
In addition to its lubricity, MoS2 is also a semiconductor. It is also known that when doped with an electrostatic field, it and other semiconductor transition metal chalcogenides become superconductors on its surface.
MoS2 and related molybdenum sulfides are efficient catalysts for hydrogen evolution, including the electrolysis of water; thus, are possibly useful to produce hydrogen for use in fuel cells.
 
As in graphene, the layered structures of MoS2 and other transition metal dichalcogenides exhibit electronic and optical properties that can differ from those in bulk. Bulk MoS2 has an indirect bandgap of 1.2 eV, while MoS2 monolayers have a direct 1.8 eV electronic bandgap. supporting switchable transistors and photodetectors.
 
The sensitivity of a graphene field-effect transistor (FET) biosensor is fundamentally restricted by the zero band gap of graphene, which results in increased leakage and reduced sensitivity. In digital electronics, transistors control current flow throughout an integrated circuit and allow for amplification and switching. In biosensing, the physical gate is removed and the binding between embedded receptor molecules and the charged target biomolecules to which they are exposed modulates the current.
 
MoS2 also possesses mechanical strength, electrical conductivity, and can emit light, opening possible applications such as photodetectors. MoS2 has been investigated as a component of photoelectrochemical (e.g. for photocatalytic hydrogen production) applications and for microelectronics applications.
 

molybdenum disulfide mos2
 

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Molybdenum Disulfide：
Molybdenum Disulfide basic information:
English name: Molybdenum Disulfide
Molybdenum Disulfide CAS No.: 1317-33-5
Molybdenum Disulfide Molecular formula: MoS2 
Molybdenum Disulfide Molar mass:160.06
Molybdenum Disulfide Appearance: black/lead-gray solid
Molybdenum Disulfide Density（water=1）: 4.8
Molybdenum Disulfide Melting point（℃）: 1185 
Molybdenum Disulfide Solubility: decomposed by aqua regie, hot sulfuric acid, nitric acid, insoluble in dilute acid and water
Molybdenum Disulfide Hazardous characteristics: the powder in high temperature will burn and react violently with peroxide.
 

Certificate of Molybdenum Disulfide:

Specification of Molybdenum Disulfide MoS2 Powder:

How is Molybdenum Disulfide MoS2 Powder produced?
MoS2 is naturally found as molybdenite (a crystalline mineral) or pyroxene (a rare low-temperature form of molybdenite). The molybdenite is processed by flotation to obtain relatively pure MoS2. The main pollutant is carbon. MoS2 can also be produced by heat treatment of almost all molybdenum compounds with hydrogen sulfide or elemental sulfur and can be produced by the metathesis reaction of molybdenum pentachloride.

Molybdenum Disulfide Uses:
Molybdenum disulfide is used as a dry lubricant in, e.g. greases, dispersions, friction materials and bonded coatings. Molybdenum-sulfur complexes may be used in suspension but more commonly dissolved in lubricating oils at concentrations of a few percent. MoS2 is used as additives in lubricating grease, friction materials, plastic, rubber, nylon, PTFE, coating and so on.

Advanced Solid Lubricants：
Molybdenum disulfide is widely used as an excellent solid lubricant in advanced solid lubricants. Its layered structure allows it to maintain excellent lubricating properties at high temperatures and pressures. During the operation of machinery, molybdenum disulfide can form a protective film, reducing friction and wear between mechanical parts, improving mechanical efficiency and extending the service life of equipment. In the petroleum and chemical industries, molybdenum disulfide is often used as an additive to lubricating oils to significantly improve the lubricity and high temperature resistance of equipment.
 

molybdenum disulfide lubricant

Catalyst：
Molybdenum disulfide is an excellent catalyst and can be used in many different catalytic reactions. Its layered structure and the similar electrical conductivity of metallic semiconductor materials make it highly active in electrocatalytic reactions. In fuel cells, molybdenum disulfide can be used as an electrocatalyst to promote the reaction of hydrogen and oxygen to produce electricity and water. In addition, molybdenum disulfide can be used in combination with precious metals as a loaded catalyst for catalytic reduction reactions, alkylation reactions and hydrogenation reactions.

Composite materials：
The micro- and nanostructure of molybdenum disulfide can be used to reinforce high-performance composite materials. By compounding molybdenum disulfide with polymers, ceramics and other materials, composites with excellent mechanical properties, thermal stability and corrosion resistance can be prepared. These composites can be used in aerospace, automotive, electronics and other fields. In addition, molybdenum disulfide can be used to prepare high-performance materials such as transistors and integrated circuits.

Optical conductors and semiconductors displaying P- or N-type electrical conductivity：
Molybdenum disulfide has excellent electrical conductivity and physicochemical properties and can be used as a photoconductor and semiconductor material. In photoelectric conversion devices, molybdenum disulfide can be used as a light-absorbing layer material to convert light energy into electrical energy. In addition, molybdenum disulfide can be used to manufacture devices such as field effect transistors and integrated circuits. Among them, transistors using molybdenum disulfide as a semiconductor material have been widely researched and applied in recent years.

Friction materials：
Molybdenum disulfide can be used in friction materials to reduce and increase friction. Its layered structure and excellent physical properties enable it to form a protective film during the friction process, reducing frictional wear and oxidation. At the same time, molybdenum disulfide can also improve the thermal stability and corrosion resistance of friction materials and extend their service life. Molybdenum disulfide is widely used in the manufacture of high-performance friction materials in automotive, aerospace and other fields.
 

molybdenum disulfide powder
 

Electrode materials for lithium batteries：
In recent years, molybdenum disulfide has been widely researched and applied as electrode material for lithium batteries. Its layered structure and high electronic conductivity enable it to improve the electrochemical performance and cycle life of electrodes in lithium batteries. At the same time, molybdenum disulfide can also improve the safety and stability of lithium batteries. In the field of new energy, molybdenum disulfide has great potential for development as an electrode material.

Other fields：
In addition to the above-mentioned fields, molybdenum disulfide has a wide range of applications in other fields. For example, in the building materials industry, molybdenum disulfide can be used as a waterproof material; in the field of environmental protection, molybdenum disulfide can be used to control pollution and repair the environment; in the pharmaceutical industry, molybdenum disulfide can be used for drug carriers and controlled release of drugs.

Storage Condition of Molybdenum Disulfide MoS2 Powder:
Damp reunion will affect MoS2 powder dispersion performance and using effects, therefore, Molybdenum Disulfide MoS2 Powder powder should be sealed in vacuum packing and stored in cool and dry room, the Molybdenum Disulfide MoS2 Powder can not be exposure to air. In addition, the Molybdenum Disulfide powder should be avoided under stress.

Packing & Shipping of Molybdenum Disulfide MoS2 Powder:
We have many different kinds of packing which depends on the Molybdenum Disulfide MoS2 Powder quantity.
Molybdenum Disulfide MoS2 Powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Molybdenum Disulfide MoS2 Powder shipping: could be shipped out by sea , by air, by express as soon as possible once payment receipt.

 molybdenum disulfide powder package

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FAQs of Molybdenum Disulfide MoS2 Powder：

Q: What is molybdenum disulfide used for?

A: Molybdenum disulfide (MoS2) powders are widely employed in various industries due to their unique properties. They serve as solid lubricants, particularly in applications where traditional oil-based lubricants would be inadequate or unsuitable, such as in high-temperature environments or under vacuum conditions. MoS2's low coefficient of friction and ability to withstand extreme pressures make it ideal for use in machinery components like gears, bearings, and pistons. Additionally, MoS2 is used in the production of lithium-ion batteries as an electrode material, contributing to higher energy density and improved performance. It also finds application in coatings for anti-corrosion protection, in composite materials to enhance mechanical properties, and in the cosmetics industry for its smooth texture and reflective qualities.

Q: Is molybdenum disulfide safe for human exposure?

A: Exposure to molybdenum disulfide should be managed with care. While bulk MoS2 is generally considered to have low toxicity, fine particles can pose inhalation risks that may lead to irritation of the respiratory system, eyes, and skin. Proper handling practices include wearing personal protective equipment (PPE) such as gloves, safety goggles, and appropriate respiratory protection when dealing with airborne dust. Adequate ventilation is important to minimize exposure levels. Adhering to manufacturer guidelines and occupational health standards ensures safe handling. For detailed information on potential health effects and safety measures, always consult the Safety Data Sheet (SDS) provided by the supplier.

Q: What is the formula and structure of molybdenum disulfide?

A: Molybdenum disulfide has the chemical formula MoS2, indicating it consists of one molybdenum atom (Mo) and two sulfur atoms (S). This compound crystallizes in a layered hexagonal structure, similar to graphite, which contributes to its lubricating properties. Each layer of MoS2 comprises a sheet of molybdenum atoms sandwiched between two sheets of sulfur atoms. The weak van der Waals forces between these layers allow them to slide past each other easily, resulting in the material's excellent lubrication capabilities. This structure is key to the performance of MoS2 in demanding industrial applications, especially those requiring low-friction solutions.

Q: Can molybdenum disulfide be incorporated into composite materials?

A: Yes, molybdenum disulfide can be integrated into composite materials to enhance specific properties such as lubricity, wear resistance, and thermal stability. Composites containing MoS2 benefit from its inherent characteristics while offering improved design flexibility and functionality. Incorporating MoS2 into polymer matrix composites can yield materials with reduced friction and increased durability, making them suitable for use in mechanical components like bearings and gears. When used as a filler in ceramics or metal matrices, MoS2 can improve tribological performance and contribute to better heat dissipation. Moreover, MoS2 nanoparticles can be dispersed within coatings to create surfaces with superior slip properties and enhanced corrosion resistance. The versatility of MoS2 makes it a valuable component in developing innovative materials across multiple industries, including automotive, aerospace, and manufacturing.