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.
Names | |
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IUPAC name
Lithium peroxide | |
Other names
Dilithium peroxide Lithium(I) peroxide | |
Identifiers | |
3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.031.585 |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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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 | |
Std enthalpy of formation (ΔfH⦵298) |
-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).
Infobox references |
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