Calcium monosilicide

Calcium monosilicide (CaSi) is an inorganic compound, a silicide of calcium. It can be prepared by reacting elemental calcium and silicon at temperatures above 1000 °C:[3]

Calcium monosilicide
3D model (JSmol)
ECHA InfoCard 100.031.430
EC Number
  • 234-587-1
UN number 1405
Molar mass 68.164 g/mol[1]
Density 2.39 g/cm3[1]
Melting point 1,324 °C (2,415 °F; 1,597 K)[1]
Orthorhombic, oS8,
Cmcm, No. 63
a = 0.4545 nm, b = 1.0728 nm, c = 0.389 nm
Main hazards Flammable gas with water
GHS pictograms
GHS Signal word Warning
P231+232, P280, P370+378, P402+404, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references


  1. Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.55. ISBN 1439855110.
  2. Rieger, W; Parthé, E (1967). "Alkaline earth silicides, germanides and stannides with CrB structure type". Acta Crystallographica. 22 (6): 919. doi:10.1107/S0365110X67001793.
  3. Brauer, Georg (1975) Handbuch der Präparativen Anorganischen Chemie. Stuttgart. Vol. 1. p. 933. ISBN 3-432-02328-6.
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