Molybdenum Disulfide
| Formula: | MoS₂ |
| CAS Number: | 1317-33-5 |
| EC Number (EINECS): | 215-263-9 |
| HS Code: | 26139000 |
| UN Number: | Not classified as dangerous goods |
| IUPAC Name: | Molybdenum Disulfide |
| Also Known As: | Moly Sulfide; Molybdenite |
| Molecular Weight, g/mol: | 160.07 |
Typical Specifications
| Appearance: | Black/gray crystalline powder |
| Odor: | Odorless |
| Melting Point, °C: | 1,185 |
| Boiling Point, °C: | Sublimes at ~450 under vacuum |
| Density, g/cm³ (at 20°C): | 5.06 |
| Solubility: | Insoluble in water; soluble in acids |
| Purity, %: | 98–99.5 (depending on grade) |
| Grades Available: | Technical, Lubricant, Coating, Nano |
| Packaging: | 25kg bags, 50kg drums, custom packaging |
Applications / Uses
Primary Applications
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Solid lubricant in extreme temperature and pressure conditions
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Additive in greases, oils, and lubricants
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Used as dry-film lubricant for aerospace, automotive, and industrial applications
Secondary Applications
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Coating material in metal forming and forging
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Additive in plastics, rubbers, and composites for wear resistance
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Catalyst in chemical reactions (e.g., hydrodesulfurization)
End Industries Served: Automotive, Aerospace, Lubricants, Industrial Machinery, Energy, Chemical Processing, Defense
Safety & Handling Information
Hazard Class (GHS): Not classified as hazardous; may cause mechanical irritation as dust
Hazard Statements (H-Codes):
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H335: May cause respiratory irritation (dust)
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H319: Causes mild eye irritation
Precautionary Statements (P-Codes):
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P261: Avoid breathing dust/fumes
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P280: Wear protective gloves/eye protection
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P304 + P340: IF INHALED – move to fresh air and keep at rest
Storage Conditions
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Store in cool, dry, ventilated area
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Keep container tightly closed to avoid moisture contamination
Transport Information
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ADR/RID: Not regulated
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IMDG: Not regulated
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IATA: Not regulated