Name | Molybdenum disulfide |
Synonyms | mos2 dag325 mopolm mopols molykote C.I. 77770 molybdenite Molybdenite (MoS2) dithioxomolybdenum naturalmolybdenite- disulfuredemolybdene Molybdenum disulfide C.I. Pigment Black 34 molybdenumsulfide(mos2) molybdenum(4+) disulfide MolybdenumDisulphidePowder Molybdenum ores, molybdenite MOLYBDENUM(IV) SULFIDE, POWDER MOLYBDENUM(IV) SULFIDE, POWDER, |
CAS | 1317-33-5 1309-56-4 |
EINECS | 215-263-9 |
InChI | InChI=1/Mo.2S/rMoS2/c2-1-3 |
InChIKey | CWQXQMHSOZUFJS-UHFFFAOYSA-N |
Molecular Formula | MoS2 |
Molar Mass | 160.07 |
Density | 5.06g/mLat 25°C(lit.) |
Melting Point | 2375 °C |
Boling Point | 100°C (water) |
Water Solubility | Soluble in hot sulfuric acid, and aquaregia. Insoluble in water, concentrated sulfuric acid and dilute acid. |
Solubility | Soluble in aqua regia, hot nitric acid and concentrated sulfuric acid, insoluble in water, dilute sulfuric acid and organic solvents |
Vapor Presure | 12600mmHg at 25°C |
Appearance | Dark gray or black powder |
Specific Gravity | 4.8 |
Color | Gray to dark gray or black |
Odor | Transparent |
Exposure Limit | ACGIH: TWA 10 mg/m3; TWA 3 mg/m3NIOSH: IDLH 5000 mg/m3 |
Merck | 14,6236 |
Storage Condition | Room Temprature |
Stability | Stable. Incompatible with oxidizing agents, acids. |
MDL | MFCD00003470 |
Physical and Chemical Properties | Appearance silver gray black powder |
Use | Used as a lubricant in various gear boxes |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
WGK Germany | - |
RTECS | QA4697000 |
TSCA | Yes |
HS Code | 28309090 |
Toxicity | LC50 inhalation in rat: > 2820mg/m3/4H |
Raw Materials | Molybdenum disulfide ERUCAMIDE |
black powder with silver-gray luster. Hexagonal crystal system. The relative density was 4. 80. Melting point 1185 °c. 450 degrees C sublimation. Mohs hardness 1~1.5. Generally, the friction coefficient is 0. 05~0.09. In the atmosphere, the temperature around 400 ° C. Began to gradually oxidize, the oxide is molybdenum trioxide. Good chemical and thermal stability. Insoluble in water, dilute acid and concentrated sulfuric acid, but soluble in hot sulfuric acid. Insoluble in other acids, bases, solvents, petroleum, synthetic lubricants. With the general metal surface does not produce chemical reaction, does not attack the rubber material.
is widely used in the automotive and mechanical industries. Can be used as a good solid lubricating material. In high temperature, low temperature, high load, high speed, chemical corrosion and modern ultra-vacuum conditions, the equipment has excellent lubricity. Added in lubricating oil, grease, polytetrafluoroethylene, nylon, paraffin wax, stearic acid can improve lubrication and reduce friction effect. Extend the lubrication cycle, reduce costs, improve working conditions. It can also be used as a non-ferrous metal stripping agent and forging lubricant.
sealed with a clean polyethylene plastic bag, or externally packed in a fiber barrel, 1kg or 15kg net weight per bag (barrel). Risk code: GB 3.2 class 32193. Store in a ventilated and dry warehouse, easily affected by moisture, packing must be tight without air leakage, use the end of the bag to tie or cover tightly, so as not to bond. Not co-stored with an oxidizing agent. During transport, it should be protected against rain and sunlight. When loading and unloading should be light to prevent packaging damage. Fire, can use water, sand, all kinds of fire extinguishing. Toxicity and protection of the maximum allowable concentration of 6mg/m3. See molybdenum oxide for the rest.