SeO2

Name: SeO2
Brand: MatWorld

ceramic

· SeO2

Selenium dioxide (SeO2) is an inorganic ceramic compound primarily used as a specialized oxide in glass manufacturing, electronics, and optical applications. In industry, it serves as a glass colorant and decolorizer in borosilicate and soda-lime glasses, and appears in selenium-based rectifiers and photocells where its semiconducting properties are exploited. Engineers select SeO2 when requiring materials with specific optical transparency, thermal stability, or electrical characteristics in niche applications where selenium's unique electronic structure provides advantages over more common ceramic alternatives.

optical glass manufacturingglass colorants and additivesphotoelectric devicesspecialty ceramicsinfrared optics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	4,419.3	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	2,311.9	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1380	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	3.415	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	22.16	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.759	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.9133	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.927	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.6718	C/m²	DFT · OptB88vdW
↳	0.5309	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00122	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00113	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-206.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	320.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	26.65	%	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.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.05960	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.6724	eV/atom	DFT · OptB88vdW
↳	-0.7777	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.

SeO2 — Properties & Data | MatWorld

SeO2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental