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Molybdenum Disulfide

Commodity    Molybdenum Disulfide   
Molecular Formula MoS2
Molecular Weight 157.88
CAS No 137-33-5
EINECS No 2152639
Specification Typical Technical Fine  Super Fine
MoS2 98.5% min. 98.5% min. 98.5% min.
Acid Insoluble 0.50% max. 0.50% max. 0.50% max.
Fe 0.25% max. 0.25% max. 0.25% max.
MoO3 0.15% max. 0.15% max. 0.20% max.
H2O 0.10% max. 0.10% max. 0.15% max.
Oil  0.20% max. 0.40% max. 0.40% max.
C 1.50% max. 1.50% max. 1.50% max.
Acid Number* 0.05 0.25 3
Particle Size (d50) μm 30 6 1.5
Fisher Number μm 3 to 4 0.65 to 0.8 0.4 to 0.45
Particle Size Range by SEM, μm below 1 to 100 below 0.5 to 20 below 0.5 to 8
Bulk Density 1.3 g/cm3 0.4 g/cm3 0.3 g/cm3
Packing in fiberboard drums with inner double plastic bags vacuumized of 25kg net each, on pallets
Uses in molybdenum compounds, solid lubricants, a variety of lubricant additives
Remarks 1.*Acid number is determined at time of production. Prolonged storage will result in slight oxidation, which will  produce an increase in acid number. The smaller particle size powder is more susceptible to surface oxidation. Acid number is expressed as an absolute value and is the mg of KOH required to neutralize the acid in a one-gram sample;
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