Home Categories Inorganic chemistry Lead oxide
A5301412

Lead oxide , 97% , 1309-60-0

Synonym(s):
Lead (su)peroxide;Lead dioxide;Lead peroxide

CAS NO.:1309-60-0

Empirical Formula: O2Pb

Molecular Weight: 239.2

MDL number: MFCD00011165

EINECS: 215-174-5

Update time: 2022-07-08

PRODUCT Properties

Melting point: 290 °C
Density  9,38 g/cm3
form  Powder
Specific Gravity 9.38
color  Brown to black
Water Solubility  Insoluble
Merck  14,5407
crystal system Nogata
Space group Pbcn
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.49480.59510.54979090900.1619

Exposure limits ACGIH: TWA 0.05 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 0.050 mg/m3

Description and Uses

Lead 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).

Lead 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.

Safety

Symbol(GHS) 
GHS03,GHS07,GHS08,GHS09
Signal word  Danger
Hazard statements  H272-H302+H332-H360D-H373-H410
Precautionary statements  P202-P210-P273-P301+P312-P304+P340+P312-P308+P313
Hazard Codes  O,T,N
Risk Statements  61-8-20/22-33-50/53-62
Safety Statements  53-45-60-61
RIDADR  UN 1872 5.1/PG 3
WGK Germany  3
RTECS  OG0700000
TSCA  Yes
HazardClass  5.1
PackingGroup  III
HS Code  28249090
Toxicity LD50 i.p. in guinea pigs: 220 mg/kg (Venugopal, Luckey)

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