|
LEAD
COMPOUNDS(Pb)
MATERIAL
OVERVIEW
Characteristics:
Heavy, ductile, soft gray solid. Soluble in dilute
nitric acid, insoluble in water but dissolves slowly
in water containing a weak acid, resists corrosion and
is relatively impenetrable to radiation. Poor
electrical conductor; good sound and vibration
absorber. Noncombustible.
Hazards:
Toxic by ingestion and inhalation of dust or fume.
Tolerance (as Pb), (fumes and dusts, and inorganic
compounds) 0.15 mg/m3 of air. For ambient air the EPA standard is 1.5 ug/m3.
A cumulative poison. FDA regulations require zero lead
content in foods and limit lead content in house
paints to .05%.
GENERAL
PROPERTIES
|
Symbol:
|
Pb
|
|
Atomic
Number:
|
82
|
|
Atomic
Weight:
|
207.2
|
|
Density:
|
11.35
gm/cc
|
|
Melting
Point:
|
327.502
oC
|
|
Boiling
Point:
|
1740
oC
|
|
Thermal
Conductivity:
|
0.353
W/cm/oK
@ 298.2 oK
|
|
Electrical
Resistivity:
|
20.648
microhm-cm @ 20 oC
|
|
Electronegativity:
|
1.8
Paulings
|
|
Specific
Heat:
|
0.038
Cal/g/oK
@ 25 oC
|
|
Heat
of Vaporization:
|
42.4
K-Cal/gm atom at 1740 oC
|
|
Heat
of Fusion:
|
1.224
Cal/gm mole
|
TYPICAL
ANALYSES
Impurities
in ppm
|
Material
/ Purity:
|
4N5
|
5N
|
6N
|
|
Sb
|
1
|
1
|
-
|
|
As
|
5
|
1
|
-
|
|
Bi
|
4
|
.2
|
-
|
|
Cu
|
4
|
1
|
-
|
|
Ag
|
2
|
1
|
<.1
|
|
Tl
|
1
|
2
|
-
|
|
Sn
|
.3
|
1
|
-
|
|
Fe
|
.3
|
.2
|
<.1
|
|
Ca
|
.4
|
.1
|
.1
|
|
Mg
|
-
|
.3
|
.1
|
LEAD
COMPOUNDS
|
Material
|
Purity
|
|
Lead
Acetate,Pb(C2H3O2)2,
-8 Mesh
|
5N
|
|
Lead
Antimonide,PbSb, 1/4" Pieces by Down
|
5N
|
|
Lead
Bismuthide,PbBi, 1/4" Pieces by Down
|
5N
|
|
Lead
Bromide,PbBr2,
-80 Mesh
|
3N,
5N
|
|
Lead
Chloride,PbCl2,
-80 Mesh
|
3N,
5N
|
|
Lead
Chloride,PbCl2,
-6, +20 Mesh
|
5N
|
|
Lead
Fluoride,PbF2,
1/4" to 1/8" Pieces
|
3N
|
|
Lead
Fluoride,PbF2,
-1/8" Chips
|
3N
|
|
Lead
Fluoride,PbF2,
-325 Mesh
|
3N
|
|
Lead
Iodate,Pb(IO3)2,
-60 Mesh
|
3N
|
|
Lead
Iodide,PbI2,
-100 Mesh
|
3N,
5N
|
|
Lead
Molybdate,PbMoO4,
-200 Mesh
|
3N
|
|
Lead
Niobate,PbNb2O6,
-200 Mesh
|
3N
|
|
Lead
Oxide,PbO, -100 Mesh
|
3N,
5N
|
|
Lead
Oxide,Pb3O4,
-100 Mesh
|
3N
|
|
Lead
Selenate,PbSeO4,
-100 Mesh
|
3N
|
|
Lead
Selenide,PbSe, -325 Mesh
|
2N,
5N
|
|
Lead
Selenide,PbSe, 1/8" Pieces
|
2N,
5N
|
|
Lead
Selenite,PbSeO3,
-100 Mesh
|
3N
|
|
Lead
Sulfide,PbS, -200 Mesh
|
3N,
5N
|
|
Lead
Tantalate,PbTa2O6,
-200 Mesh
|
3N
|
|
Lead
Tellurate,PbTeO4,
-100 Mesh
|
3N
|
|
Lead
Telluride,PbTe, 1/2" to 1/8" Pieces
|
5N
|
|
Lead
Telluride,PbTe, 1/8" Pieces
|
2N,
5N
|
|
Lead
Telluride,PbTe, -325 Mesh
|
2N,
5N
|
|
Lead
Tellurite,PbTeO3,
-100 Mesh
|
3N
|
|
Lead
Titanate,PbTiO3,
-325 Mesh
|
3N
|
|
Lead
Tungstate,PbWO4,
-200 Mesh
|
3N
|
|
Lead
Vanadate,PbV2O6,
-200 Mesh
|
3N
|
|
Lead
Zirconate,PbZrO3,
-325 Mesh
EAD
|
2N7
|
Compounds
are packaged to order and sold by the gram or
kilogram.
|
 |
