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- Cerium (Ce) Metal Synonyms:
cerium metal, Ce, cerium metal powder, cerium metal lump, cerium metal vacuum remelted, cerium metal pieces, cerium metal ingot, cerium metal foil, cerium metal rod, 58Ce, cerium met, CAS# 7440-45-1
- Cerium (Ce) Metal Designations:
Chemical Name: Cerium
Chemical Formula: Ce
a) Cerium is an iron-gray, soft, ductile and malleable metal. It is the most abundant of the rare earth elements. It is a reactive metal, rapidly oxidizing in air forming a superficial oxide coating. The metal reacts rapidly with water, readily dissolved in mineral acids and will react with most nonmetals on heating.
b) Cerium has many uses, including as an alloying agent with iron and other metals.
99.8%, 99.9%, and 99.95%
Ingot, lump, pieces, foil, rod, and powder
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Atomic Number
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58
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Molecular Weight (g/mol.)
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140.115
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Apparent Density (g/cm3)
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6.67
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Thermal conductivity (cal/s-cm-°C)
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.026
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Melting Point (°C)
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795
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Boiling Point (°C)
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3468
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Specific heat @25°C (cal/g-°C)
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.042
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Atomic Volume (W/D)
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21
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Vickers Hardness
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24
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Poisson Ratio
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0.248
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Tensile Strength (psi)
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15,000
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Crystallography
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cubic structure, face centered
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- Cerium (Ce) Metal Typical Applications:
a) A component of misch metal, carbon-arc lighting, catalyst in petroleum refining, metallurgical, and nuclear applications.
b) A major technological application for Cerium(III) oxide is a catalytic converter for the reduction of CO emissions in the exhaust gases from motor vehicles. In particular, cerium oxide is added into Diesel fuels. Another important use of the cerium oxide is a hydrocarbon catalyst in self cleaning ovens, incorporated into oven walls and as a petroleum cracking catalyst in petroleum refining.
c) The photostability of pigments can be enhanced by addition of cerium. It provides pigments with light fastness and prevents clear polymers from darkening in sunlight. Television glass plates are subject to electron bombardment, which tends to darken them by creation of F-center color centers. This effect is suppressed by addition of cerium oxide. Cerium is also an essential component of phosphors used in TV screens and fluorescent lamps.
d) A traditional use of cerium was in the pyrophoric mischmetal alloy used for light flints. Because of the high affinity of cerium to sulfur and oxygen, it is used in various aluminium alloys, and iron alloys. In steels, cerium degasifies and can help reduce sulfides and oxides, and it is a precipitation hardening agent in stainless steel. Adding cerium to cast irons opposes graphitization and produces a malleable iron. Addition of 3-4% of cerium to magnesium alloys, along with 0.2 to 0.6% zirconium, helps refine the grain and give sound casting of complex shapes. It also adds heat resistance to magnesium castings.
e) Cerium alloys are used in permanent magnets and in tungsten electrodes for gas tungsten arc welding. Cerium is used in carbon-arc lighting, especially in the motion picture industry. Source: Wikikpedia
Ampouled under argon, mineral oil, or in mylar bags
Unknown. For further information please call the E.P.A. at 1.202.554.1404
CAS# 7440-45-1
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