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Names | |
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IUPAC name
Lithium peroxide
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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 | 45.885 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 | |
Std enthalpy of
formation (ΔfH⦵298) |
-13.83 kJ/g |
Hazards | |
GHS labelling: | |
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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
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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]
Greenwood
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