Lead(II) oxide
Lead(II) oxide, also called lead monoxide, is the inorganic compound with the molecular formula PbO. PbO occurs in two polymorphs: litharge having a tetragonal crystal structure, and massicot having an orthorhombic crystal structure. Modern applications for PbO are mostly in lead-based industrial glass and industrial ceramics, including computer components. It is an amphoteric oxide.
| Names | |
|---|---|
| IUPAC name
Lead(II) oxide | |
| Other names
Lead monoxide Litharge Massicot Plumbous oxide Galena | |
| Identifiers | |
3D model (JSmol) |
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.013.880 |
| EC Number |
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| KEGG | |
PubChem CID |
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| RTECS number |
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| UNII | |
| UN number | 3288 2291 3077 |
CompTox Dashboard (EPA) |
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SMILES
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| Properties | |
| PbO | |
| Molar mass | 223.20 g/mol |
| Appearance | red or yellow powder |
| Density | 9.53 g/cm3 |
| Melting point | 888 °C (1,630 °F; 1,161 K) |
| Boiling point | 1,477 °C (2,691 °F; 1,750 K) |
| 0.017 g/L | |
| Solubility | insoluble in dilute alkalis, alcohol soluble in concentrated alkalis soluble in HCl, ammonium chloride |
Magnetic susceptibility (χ) |
4.20×10−5 cm3/mol |
| Structure | |
| Tetragonal, tP4 | |
Space group |
P4/nmm, No. 129 |
| Hazards | |
| GHS labelling: | |
| Danger | |
| H302, H332, H351, H360Df, H362, H373, H410 | |
| P201, P202, P260, P261, P263, P264, P270, P271, P273, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P314, P330, P391, P405, P501 | |
| NFPA 704 (fire diamond) |
3
0
0 |
| Flash point | Non-flammable |
| Lethal dose or concentration (LD, LC): | |
LDLo (lowest published) |
1400 mg/kg (dog, oral) |
| Safety data sheet (SDS) | ICSC 0288 |
| Related compounds | |
Other anions |
Lead(II) sulfide Lead selenide Lead telluride |
Other cations |
Carbon monoxide Silicon monoxide Germanium monoxide Tin(II) oxide |
Related lead oxides |
Lead(II,II,IV) oxide Lead dioxide |
Related compounds |
Thallium(III) oxide Bismuth(III) oxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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