P2O5 — Properties & Data | MatWorld

P2O5

Name: P2O5
Brand: MatWorld

ceramic

· P2O5

Phosphorus pentoxide (P₂O₅) is an inorganic ceramic compound and the anhydride form of phosphoric acid, commonly encountered as a white, deliquescent powder or glassy solid. It serves primarily as a desiccant, phosphorus source, and glass-forming component in specialized ceramic and optical applications, where its strong hygroscopic properties and ability to form stable glassy phases make it valuable in moisture-sensitive environments and high-performance optical systems. Engineers select P₂O₅-based compositions for applications requiring exceptional water absorption capacity, thermal stability, or incorporation into phosphate glass networks that demand corrosion resistance or specific refractive properties.

desiccants and moisture controlphosphate glass synthesisoptical fibers and coatingsspecialty ceramicschemical processing catalyststhermal insulation systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.879	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	Measured
↳	5.397	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.886	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000866	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000809	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-140.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	393.7	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-2.006	eV/atom	DFT · OptB88vdW
↳	-2.228	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.

P2O5

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental