Lithium peroxide

Lithium peroxide

__ Li+     __ O
Names
IUPAC name
Lithium peroxide
Other names
Dilithium peroxide
Lithium(I) peroxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.585 Edit this at Wikidata
UNII
  • InChI=1S/2Li.O2/c;;1-2/q2*+1;-2 checkY
    Key: HPGPEWYJWRWDTP-UHFFFAOYSA-N checkY
  • InChI=1/2Li.O2/c;;1-2/q2*+1;-2
    Key: HPGPEWYJWRWDTP-UHFFFAOYAV
  • [Li+].[Li+].[O-][O-]
Properties
Li2O2
Molar mass 45.885 g/mol
Appearance fine, white powder
Odor odorless
Density 2.32 g/cm3[1][2]
Melting point Decomposes to Li2O at ~450°C but melts at 197°C[3]
Boiling point NA
soluble[vague]
Structure
hexagonal
Thermochemistry
-13.83 kJ/g
Hazards
GHS labelling:
GHS03: OxidizingGHS05: Corrosive
Danger
H271, H272, H314
P210, P220, P221, P260, P264, P280, P283, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P306+P360, P310, P321, P363, P370+P378, P371+P380+P375, P405, P501
NFPA 704 (fire diamond)
Related compounds
Other cations
Sodium peroxide
Potassium peroxide
Rubidium peroxide
Caesium peroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Lithium peroxide is the inorganic compound with the formula Li2O2. Lithium peroxide is a white solid, and unlike most other alkali metal peroxides, it is nonhygroscopic. Because of its high oxygen:mass and oxygen:volume ratios, the solid has been used to remove CO2 from and release O2 to the atmosphere in spacecraft.[4]

  1. ^ "Physical Constants of Inorganic Compounds," in CRC Handbook of Chemistry and Physics, 91st Edition (Internet Version 2011), W. M. Haynes, ed., CRC Press/Taylor and Francis, Boca Raton, Florida. (pp: 4-72).
  2. ^ Speight, James G. (2005). Lange's Handbook of Chemistry (16th Edition). (pp: 1.40). McGraw-Hill. Online version available at: http://www.knovel.com/web/portal/browse/display?_EXT_KNOVEL_DISPLAY_bookid=1347&VerticalID=0
  3. ^ Phys.Chem.Chem.Phys.,2013,15, 11025. doi:10.1039/c3cp51056e
  4. ^ Cite error: The named reference Greenwood was invoked but never defined (see the help page).