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1314-41-6

Supplier Related Products Identification Chemical Properties Safety Data Raw materials And Preparation Products Material Safety Data Sheet(MSDS) Questions And Answer Well-known Reagent Company Product Information

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Identification

Name
Lead oxide
CAS
1314-41-6
Synonyms
DILEAD(II) LEAD(IV) OXIDE
DI-LEAD(II) LEAD(IV) OXIDE, RED
LEAD(+2,+4)OXIDE
LEAD(II,III) OXIDE
LEAD(II,III) OXIDE, RED
LEAD(II,IV) OXIDE
LEAD(II,IV) OXIDE, RED
LEAD OXIDE
LEAD OXIDE, RED
LEAD OXIDE, TETRA
LEAD TETRAOXIDE
LEAD TETROXIDE
MINIUM
RED LEAD
RED LEAD OXIDE
TRILEAD TETRAOXIDE
TRI-LEAD TETROXIDE
C.I. 77578
C.I. Pigment red 105
c.i.77578
EINECS(EC#)
215-235-6
Molecular Formula
OPb
MDL Number
MFCD00078491
Molecular Weight
223.2
MOL File
1314-41-6.mol

Chemical Properties

Definition
Natural red oxide of lead.
Appearance
red to orange powder
mp 
500 °C
bp 
800°C
density 
9,1 g/cm3
vapor pressure 
10 mm Hg ( 0 °C)

form 
red powder

Stability:
Stable. May react vigorously with reducing agents.
Merck 
14,5425
CAS DataBase Reference
1314-41-6(CAS DataBase Reference)
NIST Chemistry Reference
Lead(ii,iv) oxide(1314-41-6)
EPA Substance Registry System
1314-41-6(EPA Substance)

Safety Data

Hazard Codes 
O,T,N
Risk Statements 
R61:May cause harm to the unborn child.
R8:Contact with combustible material may cause fire.
R20/22:Harmful by inhalation and if swallowed .
R33:Danger of cumulative effects.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R62:Possible risk of impaired fertility.
Safety Statements 
S53:Avoid exposure-obtain special instruction before use .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
RIDADR 
UN 1479 5.1/PG 2

WGK Germany 
3

RTECS 
OG5425000

HS Code 
28249010
Hazardous Substances Data
1314-41-6(Hazardous Substances Data)

Raw materials And Preparation Products

Raw materials
Lead
Preparation Products
Phenolic resin paint-->beta-Methyl vinyl phosphate (MAP)

Material Safety Data Sheet(MSDS)

Questions And Answer

Physical Properties
Bright-red crystalline substance or amorphous powder; density 9.1 g/cm3; decomposes on heating to 500°C, melts at 830°C under pressure and oxygen; insoluble in water and alcohol; soluble in glacial acetic acid, hot hydrochloric acid, and a dilute nitric acid-hydrogen peroxide mixture.
Uses
Lead tetroxide has many applications. The most important use is in paint and storage-batteries. It is used as a pigment in corrosion-protecting paints for steel surfaces. It also is used in positive battery plates; in colored glasses and ceramics; in glass sealants for television picture tubes; in propellants and explosives; in radiation shields for x-rays and gamma rays; in the vulcanization of rubber; in glass-writing pencils; in adhesives for tire cords; in foaming agents and waterproofing materials; in plasters and ointments; in lead dioxide matches; and as a catalyst for oxidation of carbon monoxide in exhausts.
Preparation
Lead tetroxide is made by heating lead monoxide in the presence of air at temperatures between 450 to 500°C. The temperature should be maintained below 500°C, above which the tetroxide decomposes.
6PbO + O2→2Pb3O4
Alternatively, the tetroxide may be prepared by heating a mixture of lead monoxide and lead dioxide at 250°C:
2PbO + PbO2→Pb3O4
Reactions
When heated above 550°C, the tetroxide decomposes to monoxide, evolving oxygen:
6Pb3O4→6PbO + O2
Lead tetroxide reacts with dilute nitric acid forming lead nitrate and precipitating lead dioxide:
Pb3O4 + 4HNO3 → 2Pb(NO3)2 + PbO2 + 2H2O
The above reaction may be explained by assuming lead tetroxide as formally equivalent to plumbus plumbate having a structure Pb2II[PbIVO4] in which Pb2+ dissolves in dilute nitric acid forming lead(II) nitrate while Pb4+ precipitates out as lead(IV) oxide.
Lead tetroxide reacts with anhydrous acetic acid at 80°C producing lead(II) acetate and lead(IV) acetate. Alternatively, the tetroxide is added into a mixture of glacial acetic acid and acetic anhydride and heated gently:
Pb3O4 + 8CH3COOH → 2Pb(CH3COO)2 + Pb(CH3Coo)4 + 4H2O
On cooling, the tetraacetate crystallizes, leaving diacetate in the solution. Acetic anhydride is added to react with water produced in the reaction to form acetic acid and thus prevent hydrolysis.
Lead tetroxide can be reduced to metallic lead when heated with reducing agents, such as hydrogen, carbon, or carbon monoxide:
Pb3O4 + 4H2→3Pb + 4H2O

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