Lithium peroxide

Lithium peroxide is the inorganic compound with the formula Li2O2. It is a white, nonhygroscopic solid. Because of its high oxygen:mass and oxygen:volume ratios, the solid has been used to remove CO2 from the atmosphere in spacecraft.

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
UNII
  • InChI=1S/2Li.O2/c;;1-2/q2*+1;-2 Y
    Key: HPGPEWYJWRWDTP-UHFFFAOYSA-N Y
  • InChI=1/2Li.O2/c;;1-2/q2*+1;-2
    Key: HPGPEWYJWRWDTP-UHFFFAOYAV
  • [Li+].[Li+].[O-][O-]
Properties
Li2O2
Molar mass 45.881 g/mol
Appearance fine, white powder
Odor odorless
Density 2.31 g/cm3
Melting point Decomposes to Li2O at ~340°C
Boiling point NA
soluble
Structure
hexagonal
Thermochemistry
-13.82 kJ/g
Hazards
GHS labelling:
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).
N verify (what is YN ?)
Infobox references
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