BaO
ceramic· BaO
Barium oxide (BaO) is an alkaline earth oxide ceramic compound with a simple rock-salt crystal structure, known for its high density and strong ionic bonding. It is primarily used in specialty ceramics, glass formulations, and as a precursor material in the production of advanced ceramics and electronic components. Engineers select BaO for applications requiring thermal stability, chemical inertness, and high-temperature performance, though its hygroscopic nature (tendency to absorb moisture) and reactivity with CO₂ require careful handling and storage in sealed environments.
glass and glazesrefractory ceramicselectronic ceramics and dielectricshigh-temperature coatingssintering aids for advanced ceramicsvacuum tube and cathode materials
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 68.36 | GPa | — | ||
| ↳ | 68.36 | GPa | — | ||
| ↳ | 75.37 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.00774 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν)2 entries | 0.2668 | - | — | ||
| ↳ | 0.2700 | - | — | ||
Shear Modulus(G)3 entries | 37.75 | GPa | — | ||
| ↳ | 37.75 | GPa | — | ||
| ↳ | 40.78 | 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) | 5.854 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 4.800 | eV | — | ||
| ↳ | 2.048 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 43.04 | - | — | ||
| ↳ | 43.85 range 4.325–83.38median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -239.3 | 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) | 0.02850 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -2.840 | eV/atom | — | ||
| ↳ | -2.746 | 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
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.