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Physicochemical properties of molybdenum disulfide

When heated, molybdenum sulfide can react with chlorine gas to produce molybdenum pentachloride: 2 MoS2+7 Cl2 2 MoCl5+2 S2Cl2. Molybdenum disulfide reacts with alkyl lithium under controlled conditions to form an intercalated (interlayer compound) LixMoS2. If it responds with butyl lithium, the product is LiMoS2. Molybdenum disulfide has a high content of active sulfur and is prone to the corrosion of copper, which has been discussed in many books and papers on lubricant additives. In addition, when lubricating parts are made of copper and its alloys, it is not impossible to choose molybdenum disulfide-containing lubricating products, but rather to add copper corrosion inhibitors. The main composition of molybdenite. Black solid powder with a metallic lustre. Chemical formula MoS2, melting point 2375 , density 4.80g/cm3 (14 ), Mohs hardness 1.0-1.5. [1] Decomposition begins at 1370 and decomposes into metallic molybdenum and sulfur at 1600 . When heated in air at 315 , oxidation begins, and as the temperature increases, the oxidation reaction accelerates. Molybdenum disulfide is insoluble in water, dilute acids, and concentrated sulfuric acid, generally insoluble in other acids, alkalis, and organic solvents, but soluble in aqua regia and boiled concentrated sulfuric acid. Slow oxidation occurs at 400 , generating molybdenum trioxide. 2MoS2+7 O2 2MoO3+4 SO2 can be used to test the generated molybdenum trioxide with iron. First, treat the product with sodium hydroxide or potassium hydroxide solution (the principle is to convert molybdenum trioxide into molybdate), then drop iron solution, which will react with the generated sodium molybdate or potassium molybdate to produce a golden yellow solution. This method is susceptible, and trace molybdate can be detected. If there is no generation of molybdenum trioxide, the answer will not produce golden yellow because molybdenum disulfide does not react with sodium hydroxide or potassium hydroxide solution. If you are looking for high quality, high purity and cost-effective molybdenum disulfide, or if you require the latest price of molybdenum disulfide, please feel free to email contact mis-asia.

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