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Lithium oxide information


Not to be confused with Lithium superoxide.
Lithium oxide

__ Li+     __ O2−
Names
IUPAC name
Lithium oxide
Other names
Lithia
Kickerite
Dilithium Monoxide
Dilithium Oxide
Identifiers
CAS Number
  • 12057-24-8 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 145811 checkY
ECHA InfoCard 100.031.823 Edit this at Wikidata
PubChem CID
  • 166630
RTECS number
  • OJ6360000
UNII
  • 2ON0O9YI0Q checkY
CompTox Dashboard (EPA)
  • DTXSID90923799 DTXSID10893208, DTXSID90923799 Edit this at Wikidata
InChI
  • InChI=1S/2Li.O/q2*+1;-2 checkY
    Key: FUJCRWPEOMXPAD-UHFFFAOYSA-N checkY
  • 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 [1]
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)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
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).
checkY verify (what is checkY☒N ?)
Infobox references

Lithium oxide (Li
2O) 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%.[2]

  1. ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8
  2. ^ Cite error: The named reference Ullmann was invoked but never defined (see the help page).

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