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] It is a Zintl phase, where silicon has oxidation state −2 and covalence 2.

Calcium monosilicide

Identifiers
CAS Number	12013-55-7 Y
3D model (JSmol)	Interactive image
ChemSpider	4891865
ECHA InfoCard	100.031.430
EC Number	234-587-1
PubChem CID	6336872
UN number	1405
CompTox Dashboard (EPA)	DTXSID10893162
InChI InChI=1S/Ca.Si Key: OSMSIOKMMFKNIL-UHFFFAOYSA-N
SMILES [Si]=[Ca]
Properties
Chemical formula	CaSi
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]
Structure[2]
Crystal structure	Orthorhombic, oS8,
Space group	Cmcm, No. 63
Lattice constant	a = 0.4545 nm, b = 1.0728 nm, c = 0.389 nm
Formula units (Z)	4
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Flammable gas with water
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H261
Precautionary statements	P231+P232, P280, P370+P378, P402+P404, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references