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lead dioxide

Chemical compound

Chemical compoundtype of chemical entityQ410749

Also known as lead(IV) oxide

Formula: O₂Pb
1
Sources
1.Stated in PubChem“LEAD DIOXIDE”Retrieved 2016-09-20
View statement on Wikidata ↗
Mass: 239.9665 Da
1
Sources
1.Stated in PubChem“LEAD DIOXIDE”Retrieved 2016-09-20
View statement on Wikidata ↗
Melting point: 290°C
Density: 9,340 kg/m³

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

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 or black solid which is insoluble in water and slightly soluble in concentrated nitric and sulfuric acids. 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.

Overview

Chemistry

Computed by PubChem CID 14793 (NIH) · Public domain

Molecular formula: O2Pb
Molecular weight: 239 g/mol
IUPAC name: dioxolead
SMILES: O=[Pb]=O
InChIKey: YADSGOSSYOOKMP-UHFFFAOYSA-N
Topological polar surface area: 34.1 Å²
H-bond donors / acceptors: 0 / 2
Complexity: 18

Chemistry

All data

47 statements · 38% with external sources · numbers in brackets are citations

Canonical SMILES: O=[Pb]=O
1
Sources
1.Stated in PubChem“LEAD DIOXIDE”Retrieved 2016-09-20
View statement on Wikidata ↗
Safety classification and labelling: NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response nfpa health: 3 · nfpa fire: 0 · nfpa instability: 1
Subclass of: lead oxide
Space group: space group 62
1
Sources
1.crystallography.net/cod/9017012.htmlRetrieved 2026-08-18
View statement on Wikidata ↗
Crystal system: orthorhombic crystal system
1
Sources
1.crystallography.net/cod/9017012.htmlRetrieved 2026-08-18
View statement on Wikidata ↗
Bulk modulus: 115B Pa
Shear modulus: 46.3B Pa
Poisson's ratio: 0.322
Has part(s) of the class: oxygen
lead
Point group: orthorhombic-bipyramidal
Standard enthalpy of formation: -274.47 kilojoule per mole state of matter: solid
Standard molar entropy: 71.78 joule per mole kelvin state of matter: solid

On other databases

28 identifiers linking lead dioxide across the web's reference databases

Data quality

statements

38%

externally sourced

Source last edited September 26, 2026. AIDB refreshes this page daily.

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AIDB. (2026). lead dioxide (Q410749). Retrieved from https://aidb.si/e/lead-dioxide-Q410749