As2O5

Arsenic pentoxide · Arsenic(V) oxide

Arsenic pentoxide is a stable, semiconducting oxide of arsenic that acts as a vital precursor in the synthesis of diverse chemical products.

AsO
Crystal structure of As2O5
Ground-state structure · Materials Project
Overview

About Arsenic pentoxide

Arsenic pentoxide is a thermodynamically stable inorganic compound composed of arsenic and oxygen. It functions as a semiconducting material, distinguishing it from more common metallic oxides, and is recognized for its structural versatility with numerous documented crystalline forms.

This compound serves as a critical chemical intermediate in various industrial processes. Its stability on the convex hull makes it a reliable precursor for the production of arsenates and other arsenic-based chemical products used in specialized manufacturing sectors.

At a glance

Key Properties

Cross-validated computational properties for Arsenic pentoxide, aggregated across 4 databases.

Band Gap

1.37–1.63 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

17
4 databases, 8 space groups
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of As2O5. Tight agreement means computed properties can be trusted without re-running calculations.

Agreement Score

1.00 / 1.00
Trust tier: medium

Hull Spread

0.000 eV
EAH spread across sources

Sources Compared

2
jarvis, materials_project

Space Group Consensus

All match
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting As2O5.

Solid State
Procedure available · ceder_solid_state
Uses

Applications

Where Arsenic pentoxide is used.

Wood preservationGlass manufacturingChemical synthesisHerbicide production
Reference

Frequently Asked Questions

Common questions about Arsenic pentoxide, answered from cross-validated data.

What is As2O5?

Arsenic pentoxide is a stable, semiconducting oxide of arsenic that acts as a vital precursor in the synthesis of diverse chemical products.

More questions
What is As2O5 used for?
Arsenic pentoxide (As2O5) is used in wood preservation, glass manufacturing, chemical synthesis, and herbicide production.
What is the band gap of As2O5?
Arsenic pentoxide (As2O5) has a DFT-computed band gap of 1.37–1.63 eV across 17 reported structures.
Is As2O5 a metal, semiconductor, or insulator?
With a band gap up to 1.63 eV it is a semiconductor.
Is As2O5 thermodynamically stable?
Yes — Arsenic pentoxide (As2O5) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of As2O5 are known?
17 structures of As2O5 are reported across 4 databases, spanning 8 distinct space groups.
How is As2O5 synthesized?
Literature-reported routes for As2O5 include solid state.
What elements does As2O5 contain?
Arsenic pentoxide (As2O5) contains As and O (2 elements).
Where does the data for As2O5 come from?
As2O5 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a stable semiconducting oxide, this compound occupies a unique niche in materials science, serving as a primary reference point for arsenic-based chemical systems where high thermodynamic stability is required for consistent industrial performance.

Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

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