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Molybdenum Disilicide Powder, MoSi2, CAS 12136-78-6


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Molybdenum Disilicide (MoSi2) Powder is a black-grey powder with a quadratic crystal structure. It is widely used in the field of high-temperature structural ceramics. The purity and particle size can be tailored according to specific requirements.

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Data sheet

Molecular FormulaMoSi2

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Molybdenum Disilicide (MoSi2) Powder is an intermediate phase with the highest silicon content in the binary alloy system and has both metallic and ceramic properties. Heeger Materials can provide high-quality Molybdenum Disilicide Powder at a competitive price.

Molybdenum Disilicide Powder, MoSi2, CAS 12136-78-6

  • Formula: MoSi2
  • Density: 6.24g/cm3
  • Melting point: 2030℃
  • Thermal conductivity: 45 W/m·K
  • Thermal expansion coefficient: 8.1×10-6K-1
  • Resistivity: 21.5×10-6 Ω·cm
  • Vickers hardness: 10.6Gpa
  • CAS: 12136-78-6
  • EINECS NO.: 235-231-8

Molybdenum Disilicide Powder Chemical Analysis


Purity (%)

Chemical Composition (wt%)



















Particle Size Distribution

D10: 1.5-2.0 μm, D50: 5.5-7.5 μm, D90: 10.5-13.5 μm

Molybdenum Disilicide Powder Properties

Molybdenum Disilicide Powder - SEM

  • High melting point and corrosion resistance
  • Low specific gravity
  • High-temperature oxidation resistance
  • High-temperature plasticity
  • Thermal and electrical conductivity
  • Fluidity

Molybdenum Disilicide Powder Applications

  • Used in high-temperature antioxidant coating materials
  • Used in electric heating elements
  • Used in integrated electrode films
  • Used in structural materials
  • Used in reinforcing agents for composite materials
  • Used in wear-resistant materials
  • Used in joining materials for structural ceramics

Molybdenum Disilicide Powder Storage and Packing

Molybdenum Disilicide (MoSi2) Powder should be kept sealed and stored in a dry and cool place, avoiding heavy pressure, contact with oxidizing agents, and being exposed to air for a long time. The vacuum packing is 100g/bag, 500g/bag, 1kg/bag, 25kg/drum, or as required.

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