Mercurous sulfate (Hg₂SO₄) is an inorganic ceramic compound historically used in electrochemical applications and analytical chemistry. This material is primarily encountered in reference electrode systems—most notably as the basis for calomel electrodes—where its electrochemical stability and well-defined reduction potential make it valuable for laboratory and field measurements. While largely superseded in modern applications by safer alternatives due to mercury's toxicity and environmental concerns, Hg₂SO₄ remains important in specialized electrochemistry and calibration work where its established thermodynamic properties are essential.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 43.62 | GPa | — | ||
Poisson's Ratio(ν) | 0.3500 | - | — | ||
Shear Modulus(G) | 15.63 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 6.871 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.304 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -108.8 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -1.100 | eV/atom | — | ||
| ↳ | -0.8895 | eV/atom | — |