HgSeO4

ceramic

· HgSeO4

Mercury selenate (HgSeO₄) is an inorganic ceramic compound containing mercury, selenium, and oxygen. While not commonly encountered in mainstream engineering applications, this material belongs to the family of metal selenate compounds that have been studied primarily in materials research contexts for their crystalline properties and potential optical or electronic characteristics. The compound's notable density and stiffness reflect the heavy metal content typical of mercury-based ceramics, though practical engineering use remains limited due to toxicity concerns and the availability of safer alternative materials.

materials research/academic studyoptical material investigationspecialized chemical synthesismercury compound researchselenate compound systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	8,642.8	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3600	-	DFT · OptB88vdW
Shear Modulus(G)	2,716.6	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2395	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)	0.9030	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	15.50	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.970	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.3000	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.373	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.5409	C/m²	DFT · OptB88vdW
↳	0.5713	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.000568	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00232	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-83.97	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	381.8	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.03360	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4895	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.

HgSeO4 — Properties & Data | MatWorld

HgSeO4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental