Si2O5

ceramic

· JVASP-40636· Si2O5

Si₂O₅ is a silica-based ceramic compound belonging to the silicate family, likely representing a specific stoichiometric oxide phase or a research composition rather than a commercial bulk material. This material exhibits characteristics typical of glass-ceramics or glassy silicates, making it relevant for applications requiring thermal stability and mechanical rigidity in oxidizing environments.

Glass-ceramic matrix compositesRefractory liningsThermal barrier coatingsOptical fibersResearch ceramicsHigh-temperature insulation

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	6,267.1	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.1600	-	DFT · OptB88vdW
Shear Modulus(G)	3,975.5	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.08504	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	3.228	eV	DFT · OptB88vdW
↳	4.531	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	5.457	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.568	-	DFT · OptB88vdW
↳	2.110	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.2273	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00115	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000442	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-201.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	372.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.3061	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.182	eV/atom	DFT · OptB88vdW

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.

Si2O5 — Properties & Data | MatWorld

Si2O5

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental