Grundinformationen
- CAS
1309-60-0- Standard-SMILES
[O-2].[O-2].[Pb]- InChIKey
DKHWXLMEOHGPEX-UHFFFAOYSA-N- Summenformel
- O2Pb-4
- Durchschnittliche Molmasse
- 239 g/mol
- Monoisotopische Masse
- 239,96648
Namen und Bezeichner
- Bevorzugter Name
- Lead dioxide [hsdb]
- Lokaler Name
- Bleidioxid
- Englischer Name
- Lead dioxide
- Summenformel
- O2Pb
- Molmasse
- 239.2
Namen und Synonyme
LEAD DIOXIDE [MI]LEAD DIOXIDE [HSDB]SCHEMBL454133PbO2LEAD PEROXIDEPlattneriteLeproLP-100ci77580c.i.77580leadbrowndioxolead
Weitere Namen anzeigen
C.I. 77580
Datenbank-Bezeichner
- CAS
1309-60-0- PubChem CID
- 10198636
- UNII
- 7JJD3ICL6A
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 2 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 2
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 3
- Formalladung
- -4
- Komplexität
- 0
Physikochemische Eigenschaften
- Schmelzpunkt
- 290 °C · 290 °C
- Dichte
- 9 · 9,38 g/cm3
- Aggregatzustand
- Powder
- Wichte
- 9.38 · 9.38
- Farbe
- Brown to black
- Wasserlöslichkeit
- Insoluble
- Spezifische Wärmekapazität
- 0.27 J/ · Cp(crystal): 0.27 J/(g·K), at 25℃
- Merck
- 14 · 14,5407
- InChI
- InChI=1S/2O.Pb
- InChIKey
- YADSGOSSYOOKMP-UHFFFAOYSA-N
- SMILES
- [Pb](=O)=O
- CAS Datenbank
- 1309 · 1309-60-0(CAS DataBase Reference)
- NIST chemische Informationen
- Lead dioxide(1309-60-0)
- EPA chemische Informationen
- Lead dioxide (1309-60-0)
Sicherheit und Regulatorisches
Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.
Sicherheitsdaten
- wgk
- 3
- tsca
- TSCA listed
- ridadr
- UN 1872
- hs_code
- 28249090
- RTECS-Nr.
- OG0700000
- risk_code
- 61-8-20/22-33-50/53-62
- Toxizität
- LD50 i.p. in guinea pigs: 220 mg/kg (Venugopal, Luckey)
- hazard_code
- O,T,N
- safety_code
- 53-45-60-61
- hazard_class
- 5.1
- packing_group
- III
- Speicherklasse
- 5.1B - Oxidizing hazardous materials
- Giftige Stoffe Daten
- 1309-60-0(Hazardous Substances Data)
- Hazard Classifications
- Acute Tox. 4 InhalationAcute Tox. 4 OralAquatic Acute 1Aquatic Chronic 1Ox. Sol. 3Repr. 1ASTOT RE 2
Chemie und Industrie
Anwendungen
BeschreibungLead dioxide, PbO2, also plumbic oxide, is an odorless dark-brown crystalline powder which is nearly insoluble in water. It exists in two crystalline forms. The a phase has orthorhombic symmetry, lattice constants a=0.497 nm, b=0.596 nm, c= 0.544 nm, Z=4 (four formula units per unit cell).
OccurrenceLead dioxide occurs in nature as the mineral plattnerite. It is used as an oxidizing agent in manufacturing dyes and intermediates. It also is used as a source of oxygen in matches, pyrotechnics, and explosives. In matches, the oxide is combined with amorphous phosphorus as an ignition surface. It also is used in making lead pigments, liquid polysulfide polymers and rubber substitutes. Lead dioxide electrodes are used in lead storage batteries in which lead dioxide accumulates on positive plates.
VerwendenLead dioxide occurs in nature as the mineral plattnerite. It is used as an oxidizing agent in manufacturing dyes and intermediates. It also is used as a source of oxygen in matches, pyrotechnics, and explosives. In matches, the oxide is combined with amorphous phosphorus as an ignition surface. It also is used in making lead pigments, liquid polysulfide polymers and rubber substitutes. Lead dioxide electrodes are used in lead storage batteries in which lead dioxide accumulates on positive plates.
Darstellung
synthetischeLead dioxide is produced by oxidizing an alkaline slurry of lead monoxide with chlorine, sodium hypochlorite, or bleaching powder. Alternatively, it is obtained by passing chlorine into a hot aqueous suspension of lead sulfate and magnesium hydroxide. The ionic reaction is: Pb(OH)3ˉ +ClOˉ → PbO2 + Clˉ+ OHˉ + H2O It also is produced by electrolysis of acidic solutions of lead salts using a lead or platinum electrode. In such electrolytic process, lead dioxide is deposited on the anode of the cell. Insoluble powdered lead dioxide also may be obtained when lead tetroxide is heated with nitric acid: Pb3 O4 + 4HNO3 → 2Pb(N)3)2 + PbO2 + 2H2O Lead dioxide also can be prepared by fusing lead monoxide with a mixture of sodium nitrate and sodium chlorate.
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