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LANTHANUM
COMPOUNDS(La)
MATERIAL
OVERVIEW
Characteristics:
White, malleable, ductile metal. Oxidizes rapidly in
air. Corrodes in moist air, soluble in acids,
decomposes in water to lanthanum hydroxide and
hydrogen. Hazards: Ignites spontaneously in powdered
form. May delay blood clotLanthanumg and cause liver injury.
GENERAL
PROPERTIES
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Symbol:
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La
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|
Atomic
Number:
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57
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Atomic
Weight:
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138.9055
|
|
Density:
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6.145
gm/cc
|
|
Melting
Point:
|
921
oC
|
|
Boiling
Point:
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3457
oC
|
|
Thermal
Conductivity:
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0.134
W/cm/oK
@ 298.2 oK
|
|
Electrical
Resistivity:
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5.70
microhm-cm @ 25 oC
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|
Electronegativity:
|
1.1
Paulings
|
|
Specific
Heat:
|
0.047
Cal/g/oK @ 25 oC
|
|
Heat
of Vaporization:
|
96
K-Cal/gm atom at 3457 oC
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|
Heat
of Fusion:
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2.40
Cal/gm mole
|
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Thermal
Neutron Cross Section:
|
9
Barns per Atom
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Magnetic
Susceptibility
|
115
x 10-6
Emu
@ Room Temp
|
|
Magnetic
Moment:
|
0
Bohr Magnetons
|
|
Temperature
Coefficient of Resistance:
|
0.00218
@ 0 oC
to Room Temp
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TYPICAL
ANALYSES
Impurities
in ppm
|
Material
/ Purity:
|
3N
|
|
Nd
|
400
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|
Al
|
<100
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|
Ca
|
<100
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Fe
|
100
|
|
Mg
|
<100
|
|
Pr
|
<100
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|
Si
|
200
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Y
|
<100
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Ce
|
<100
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Ca
|
100
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Ni
|
100
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COMPOUNDS
|
Material
|
Purity
|
|
Lanthanum
Boride,LaB6,
-100 Mesh
|
3N5
|
|
Lanthanum
Boride,LaB6,
-325 Mesh
|
2N5,
3N
|
|
Lanthanum
Carbide,LaC2,
1/2" Pieces by Down
|
3N
|
|
Lanthanum
Chloride,LaCl3-xH2O, -60 Mesh
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3N
|
|
Lanthanum
Chloride,LaCl3, -60 Mesh
|
3N
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Lanthanum
Fluoride,LaF3,
1/4" to 1/8" Pieces
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3N
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|
Lanthanum
Fluoride,LaF3,
-60 Mesh
|
3N
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|
Lanthanum
Fluoride,LaF3,
-325 Mesh
|
3N
|
|
Lanthanum
Fluoride,LaF3,
Tablets
|
3N
|
|
Lanthanum
Nitride,LaN, -60 Mesh
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3N
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Lanthanum
Oxide,La2O3,
-325 Mesh
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3N,
4N, 5N
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|
Lanthanum
Oxide,La2O3,
1/2" to 1/8" Pieces
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3N
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Compounds
are packaged to order and sold by the gram or
kilogram.
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