PbO

ceramic
· PbO

Lead oxide (PbO) is an inorganic ceramic compound that exists primarily in two crystal forms (tetragonal and orthorhombic) and serves as a key precursor and functional component in ceramic systems. It is widely used in lead-based glass formulations, glazes, and frits for tableware and decorative ceramics, where it lowers melting temperature and improves melt fluidity, and also finds application in specialized electrical ceramics and historical pigment production. Engineers select PbO-based systems for their ability to densify ceramics at lower firing temperatures and to modify optical and dielectric properties, though regulatory restrictions on lead content in consumer-facing applications have limited its adoption in modern product design in many regions.

Lead glass and crystal formulationsCeramic glazes and fritsElectrical insulators and capacitorsHistorical pigments and colorantsHigh-temperature sealing glasses

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
Property OverviewNormalized to typical max values
PropertyValueUnitConditionsSource
Bulk Modulus(K)
30.36
GPa—
Compressive Strength(σc)
313.8
MPa—
Elongation at Break(εf)
4.090
-—
Exfoliation Energy(Eexf)
70.33
meV/atom—
Flexural Strength (MOR)(σf)
247.0
MPa—
Poisson's Ratio(ν)
0.3300
-—
Shear Modulus(G)
16.67
GPa—
Ultimate Tensile Strength(σUTS)
1.008
GPa—
Young's Modulus(E)
114.5
GPa—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
410.1
K—
Melting Point / Solidus(Tm)
388.2
K—
Maximum Service Temperature(Tmax)
901.6
K—
Thermal Conductivity(k)
0.2606
W/(m·K)—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
9.298
kg/m³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)2 entries
2.484
eV—
↳
2.294
eV—
Dielectric Constant (Relative Permittivity)(εr)
231.4
-—
Magnetic Moment(μB)
0.000
µB—
Piezoelectric Modulus(eij)2 entries
0.9915
C/m²—
↳
0.00321
C/m²—
Piezoelectric Stress Tensor(eij)
Matrix (redacted)
C/m²—
Seebeck Coefficient(S)
-162.8
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
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.01580
eV/atom—
Formation Energy(ΔHf)2 entries
-1.130
eV/atom—
↳
-1.229
eV/atom—
Refractive Index(n)
2.387
-—
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.