Lead dioxide
| Names | |
|---|---|
| IUPAC name
Lead(IV) oxide
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| Other names
Plumbic oxide
Plattnerite | |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.013.795 |
| EC Number |
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PubChem CID
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| RTECS number |
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| UNII | |
| UN number | 1872 |
CompTox Dashboard (EPA)
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| Properties | |
| PbO2 | |
| Molar mass | 239.1988 g/mol |
| Appearance | dark-brown, black powder |
| Density | 9.38 g/cm3 |
| Melting point | 290 °C (554 °F; 563 K) decomposes |
| insoluble | |
| Solubility | soluble in acetic acid insoluble in alcohol |
Refractive index (nD)
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2.3 |
| Structure | |
| hexagonal | |
| Hazards | |
| GHS labelling: | |
| Danger | |
| H272, H302, H332, H360, H372, H373, H410 | |
| P201, P202, P210, P220, P221, P260, P264, P270, P271, P273, P280, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P314, P330, P370+P378, P391, P405, P501 Preview warning: Omit Rules: keep P260, omit P261
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| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| Safety data sheet (SDS) | External MSDS |
| Related compounds | |
Other cations
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Carbon dioxide Silicon dioxide Germanium dioxide Tin dioxide |
| Lead(II) oxide Lead(II,IV) oxide | |
Related compounds
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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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Lead(IV) oxide, commonly known as lead dioxide, is an inorganic compound with the chemical formula PbO2. It is an oxide where lead is in an oxidation state of +4. It is a dark-brown solid which is insoluble in water. It exists in two crystalline forms. It has several important applications in electrochemistry, in particular as the positive plate of lead acid batteries and as a relatively inexpensive anode in electrolysis reactions.