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Yttrium Disilicide Powder, YSi2, CAS 12067-55-9


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Yttrium Disilicide (YSi2) Powder exhibits a black-grey appearance and undergoes a transition in crystal structure from orthogonal at low temperatures to tetragonal at high temperatures. Heeger Materials offers top-quality Yttrium Disilicide Powder at competitive prices, with customized options for purity and particle sizes to meet specific requirements.

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Data sheet


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Yttrium Disilicide (YSi2) Powder is a compound with a greater resistivity than yttrium metal and exhibits a positive resistance temperature coefficient that becomes negative at 500 ℃. It readily reacts with hydrochloric acid and hydrofluoric acid, while remaining insoluble in water.

Yttrium Disilicide Powder, YSi2, CAS 12067-55-9

  • Formula: YSi2
  • Density: 4.42g/cm3
  • Melting point: 1520℃
  • Molecular weight: 145.08g/mol
  • CAS: 12067-55-9

Yttrium Disilicide Powder Specifications


Purity (%)

Chemical Composition (%)











Particle Size

-325mesh, or customized according to requirements

Yttrium Disilicide Powder Storage and Packing

Yttrium Disilicide (YSi2) Powder should be kept sealed and stored in a dry and cool place, avoiding heavy pressure and oxidizing agents. The powder is available in vacuum-sealed packaging options of 100g/bag, 500g/bag, 1kg/bag, 25kg/drum, or customized as per specific requirements.

Yttrium Disilicide (YSi2) Powder Packing

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