Na2O2
Sodium peroxide · Sodium dioxide
Sodium peroxide is a stable, semiconducting inorganic compound widely used as a strong oxidizing agent and a reliable source of oxygen.

About Sodium peroxide
Sodium peroxide is a thermodynamically stable compound that functions as a semiconducting oxide. Its chemical structure allows it to act as a potent reagent, playing a critical role in processes requiring strong oxidation or the rapid release of oxygen. The compound is highly valued for its ability to facilitate complex chemical transformations. Due to its stability and reactive nature, it is a key material in laboratory synthesis and industrial oxygen generation systems.
Key Properties
Cross-validated computational properties for Sodium peroxide, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Applications
Where Sodium peroxide is used.
Frequently Asked Questions
Common questions about Sodium peroxide, answered from cross-validated data.
What is Na2O2?
Sodium peroxide is a stable, semiconducting inorganic compound widely used as a strong oxidizing agent and a reliable source of oxygen.
What is Na2O2 used for?
What is the band gap of Na2O2?
Is Na2O2 a metal, semiconductor, or insulator?
Is Na2O2 thermodynamically stable?
How many polymorphs of Na2O2 are known?
What elements does Na2O2 contain?
Where does the data for Na2O2 come from?
How It Compares
As a primary alkali metal peroxide, this compound serves as a foundational reference material for understanding the reactivity and electronic behavior of oxygen-rich sodium compounds.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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