Lithium oxide

Lithium oxide
	; __ Li+ __ O2−
Names
	IUPAC name Lithium oxide
	Other names Lithia; Kickerite; Dilithium Monoxide; Dilithium Oxide
Identifiers
CAS Number	12057-24-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	145811 ;
ECHA InfoCard	100.031.823
PubChem CID	166630;
RTECS number	OJ6360000;
UNII	2ON0O9YI0Q ;
CompTox Dashboard (EPA)	DTXSID90923799 DTXSID10893208, DTXSID90923799 ;
	InChI InChI=1S/2Li.O/q2+1;-2 Key: FUJCRWPEOMXPAD-UHFFFAOYSA-N ; InChI=1S/2Li.O/q2+1;-2 Key: FUJCRWPEOMXPAD-UHFFFAOYAW; Key: FUJCRWPEOMXPAD-UHFFFAOYSA-N;
	SMILES [Li+].[Li+].[O-2];
Properties
Chemical formula	Li; 2O
Molar mass	29.88 g/mol
Appearance	white solid
Density	2.013 g/cm3
Melting point	1,438 °C (2,620 °F; 1,711 K)
Boiling point	2,600 °C (4,710 °F; 2,870 K)
Solubility in water	Reacts to form LiOH
log P	9.23
Refractive index (nD)	1.644
Structure
Crystal structure	Antifluorite (cubic), cF12
Space group	Fm3m, No. 225
Coordination geometry	Tetrahedral (Li+); cubic (O2−)
Thermochemistry
Heat capacity (C)	1.8105 J/g K or 54.1 J/mol K
Std molar; entropy (S⦵298)	37.89 J/mol K
Std enthalpy of; formation (ΔfH⦵298)	-20.01 kJ/g or -595.8 kJ/mol
Gibbs free energy (ΔfG⦵)	-562.1 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Corrosive, reacts violently with water
NFPA 704 (fire diamond)	3 0 1 W
Flash point	Non-flammable
Related compounds
Other anions	Lithium sulfide; Lithium selenide; Lithium telluride; Lithium polonide
Other cations	Sodium oxide; Potassium oxide; Rubidium oxide; Caesium oxide
Related lithium oxides	Lithium peroxide; Lithium superoxide
Related compounds	Lithium hydroxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Lithium oxide (Li
₂ O) or lithia is an inorganic chemical compound. It is a white solid. Although not specifically important, many materials are assessed on the basis of their Li₂O content. For example, the Li₂O content of the principal lithium mineral spodumene (LiAlSi₂O₆) is 8.03%.

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