Re2O7 — Properties & Data | MatWorld

Re2O7

Name: Re2O7
Brand: MatWorld

ceramic

· Re2O7

Re₂O₇ (dirhenium heptoxide) is a rare-earth oxide ceramic compound containing rhenium, an element prized for its high-temperature stability and chemical inertness. While not a mainstream engineering material, rhenium oxides are investigated primarily in specialized research contexts for high-temperature applications, catalysis, and as precursors for advanced rhenium metal or alloy production. The material's notable density and potential thermal properties make it relevant where extreme environments or catalytic functionality is required, though limited commercial availability and high material costs restrict its use to niche aerospace, chemical processing, and materials research applications.

High-temperature ceramics researchCatalyst precursors and chemical processingRhenium alloy productionAerospace component researchMaterials science experimentationSpecialized industrial chemistry

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2490	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000822	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000620	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-43.58	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-38.23	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.05630	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.484	eV/atom	DFT · OptB88vdW
↳	-1.438	eV/atom	Measured

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Re2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental