Na2Cr2O7

Sodium dichromate · Sodium bichromate

Sodium dichromate is a stable, semiconducting inorganic compound primarily utilized as a versatile oxidizing agent in industrial chemical production.

Crystal structure of Na2Cr2O7
Ground-state structure · Materials Project
Overview

About Sodium dichromate

Sodium dichromate is a semiconducting layered sodium transition-metal oxide that occupies a stable position on the convex hull. Its structural characteristics make it a significant inorganic compound for various industrial chemical processes.

This material is widely recognized for its role as a powerful oxidizing agent. It serves as a fundamental building block in the production of chromium-based compounds, pigments, and corrosion-resistant coatings, leveraging its stable chemical nature.

At a glance

Key Properties

Cross-validated computational properties for Sodium dichromate, aggregated across 3 databases.

Band Gap

2.53–2.62 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

7
3 databases, 1 space group
Uses

Applications

Where Sodium dichromate is used.

Chromium pigment productionMetal surface treatmentCorrosion inhibitionLeather tanningChemical synthesis precursor
Reference

Frequently Asked Questions

Common questions about Sodium dichromate, answered from cross-validated data.

What is Na2Cr2O7?

Sodium dichromate is a stable, semiconducting inorganic compound primarily utilized as a versatile oxidizing agent in industrial chemical production.

More questions
What is Na2Cr2O7 used for?
Sodium dichromate (Na2Cr2O7) is used in chromium pigment production, metal surface treatment, corrosion inhibition, leather tanning, and chemical synthesis precursor.
What is the band gap of Na2Cr2O7?
Sodium dichromate (Na2Cr2O7) has a DFT-computed band gap of 2.53–2.62 eV across 7 reported structures.
Is Na2Cr2O7 a metal, semiconductor, or insulator?
With a band gap up to 2.62 eV it is a semiconductor.
Is Na2Cr2O7 thermodynamically stable?
Yes — Sodium dichromate (Na2Cr2O7) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Na2Cr2O7 are known?
7 structures of Na2Cr2O7 are reported across 3 databases, spanning 1 distinct space group.
What elements does Na2Cr2O7 contain?
Sodium dichromate (Na2Cr2O7) contains Cr, Na, and O (3 elements).
Where does the data for Na2Cr2O7 come from?
Na2Cr2O7 data is cross-referenced from latticegraph.
Comparison

How It Compares

Within the layered sodium transition-metal oxides class.

Within the diverse family of layered sodium transition-metal oxides, Na2Cr2O7 distinguishes itself from cathode-focused materials like NaCoO2 or NaNiO2 by its primary utility in industrial oxidation and surface treatment rather than energy storage applications.

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Related Compounds

Other Layered Sodium Transition-Metal Oxides in the database.

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

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