HgO
semiconductor· HgO
Mercury oxide (HgO) is a semiconductor compound historically used as a pigment and in specialized electrochemical applications. Its primary industrial use has been in mercury batteries (since largely phased out due to environmental regulations) and as a red pigment in paints and ceramics, though modern applications are limited due to mercury's toxicity and strict environmental controls. Engineers encounter HgO primarily in legacy system analysis, historical device restoration, or niche research contexts exploring mercury-based semiconductors, where its unique electronic properties and high density distinguish it from conventional alternatives.
legacy battery systemshistorical pigmentation applicationsmercury-based research semiconductorselectrochemical sensors (archival)ceramic colorants (regulated use)
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 23.94 | GPa | — | ||
| ↳ | 23.57 | GPa | — | ||
| ↳ | 43.84 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 2.423 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν)2 entries | 0.3150 | - | — | ||
| ↳ | 0.3500 | - | — | ||
Shear Modulus(G)3 entries | 10.12 | GPa | — | ||
| ↳ | 9.657 | GPa | — | ||
| ↳ | 14.71 | GPa | — |
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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 10.46 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 2.210 | eV | — | ||
| ↳ | 1.217 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 9.780 | - | — | ||
| ↳ | 15.95 | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -279.3 | µV/K | — |
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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.01970 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.4705 | eV/atom | — | ||
| ↳ | -0.2255 | eV/atom | — |
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.
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
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.