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BARIUM
COMPOUNDS (Ba)
MATERIAL
OVERVIEW
Characteristics:
Silver-white, somewhat malleable metal. Extremely
reactive; reacts readily with water, ammonia,
halogens, oxygen, and most acids. Gives green color in
flame. Extrudable and machinable.
Derivation:
Reduction of barium oxide with Barium or silicon in a
vacuum at high temperature.
Hazard:
Toxic. Flammable (pyrophoric) at room temperature in
powder form; store under inert gas, petroleum, or
other oxygen-free liquid. When heated to about 200 oC in
hydrogen, barium reacts violently, forming BaH2.
Tolerance for all soluble barium compounds is 0.5 mg/m3
in air (as Ba).
GENERAL
PROPERTIES
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Symbol:
|
Ba
|
|
Atomic
Number:
|
56
|
|
Atomic
Weight:
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137.33
|
|
Density:
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3.5
gm/cc
|
|
Melting
Point:
|
725
oC
|
|
Boiling
Point:
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1640
oC
|
|
Thermal
Conductivity:
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20.184
W/cm/oK @ 298.2 oK
|
|
Electrical
Resistivity:
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-
|
|
Electronegativity:
|
0.9
Paulings
|
|
Specific
Heat:
|
0.046
Cal/g/oK @ 25 oC
|
|
Heat
of Vaporization:
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35.7
K-cal/gm atom at 1640 oC
|
|
Heat
of Fusion:
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1.83
Cal/gm mole
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TYPICAL
ANALYSES
Impurities
in ppm
|
Material
/ Purity:
|
2N5
|
3N
|
|
Al
|
<600
|
-
|
|
Ca
|
<200
|
<700
|
|
Cl
|
<100
|
-
|
|
Fe
|
<200
|
<100
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|
Mg
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<200
|
<100
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Sr
|
<800
|
<500
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BARIUM
COMPOUNDS
|
Material
|
Purity
|
|
Barium
Aluminate BaAl2O4,
-100 Mesh
|
2N5
|
|
Barium
Aluminide 1/8" Pieces By Down
|
2N5
|
|
Barium
Antimonide BaSb2, 1/8" Pieces By Down
|
2N5
|
|
Barium
Boride, BaB6 -100 Mesh
|
2N5
|
|
Barium
Bromide BaBr2 -20 Mesh
|
3N,
4N5
|
|
Barium
Carbonate BaCO3, -80 Mesh
|
2N
5N
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|
Barium
Chloride BaCl2, -60 Mesh
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3N
|
|
Barium
Ferrite BaFe12O19,
-325 Mesh
|
1N8
|
|
Barium
Fluoride BaF2, 1/4"-1/8" Pieces
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2N,
3N
|
|
Barium
Fluoride BaF2, -325 Mesh
|
2N,
4N
|
|
Barium
Hydride BaH2, -60 Mesh
|
2N7
|
|
Barium
Molybdate BaMoO4, -100 Mesh
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3N
|
|
Barium
Oxide BaO, -100 Mesh
|
2N5
|
|
Barium
Selenide BaSe, -20 Mesh
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2N5
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Compounds
are packaged to order and sold by the gram or
kilogram.
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