Na2SeO4
Sodium selenate · Disodium selenate
Sodium selenate is a stable, insulating inorganic salt frequently used as a source of selenium in chemical and nutritional applications.

About Sodium selenate
Sodium selenate is a stable inorganic salt that functions as a wide-gap insulator. Its position on the convex hull indicates high thermodynamic stability, making it a reliable chemical species for various industrial and laboratory applications.
As a selenium-containing compound, it is valued for its solubility and reactivity in aqueous environments. It serves as a primary precursor for introducing selenium into biological and chemical systems, benefiting from its well-defined structural characteristics.
Key Properties
Cross-validated computational properties for Sodium selenate, 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 selenate is used.
Frequently Asked Questions
Common questions about Sodium selenate, answered from cross-validated data.
What is Na2SeO4?
Sodium selenate is a stable, insulating inorganic salt frequently used as a source of selenium in chemical and nutritional applications.
What is Na2SeO4 used for?
What is the band gap of Na2SeO4?
Is Na2SeO4 a metal, semiconductor, or insulator?
Is Na2SeO4 thermodynamically stable?
How many polymorphs of Na2SeO4 are known?
What elements does Na2SeO4 contain?
Where does the data for Na2SeO4 come from?
How It Compares
As a standalone representative of its chemical family, sodium selenate serves as a fundamental reference point for selenate-based chemistry. Its stability and insulating nature define the baseline performance for similar alkali metal selenates, highlighting the importance of the sodium cation in stabilizing the selenate polyanion framework.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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