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Europium(III) oxide

From Wikipedia, the free encyclopedia

Europium oxide
Eu2O3.powder.jpg
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.787
Properties
Eu2O3
Molar mass 351.926 g/mol
Appearance white to light-pink solid powder
Odor odorless
Density 7.42 g/cm3
Melting point 2,350 °C (4,260 °F; 2,620 K)[1]
Boiling point 4,118 °C (7,444 °F; 4,391 K)
Negligible
+10,100·10−6 cm3/mol
Thermal conductivity 2.45 W/(m K)
Structure
Monoclinic, Cubic
Hazards
Safety data sheet External MSDS
Lethal dose or concentration (LD, LC):
5000 mg/kg (rat, oral)
Related compounds
Other anions
Europium(III) chloride
Other cations
Samarium(III) oxide, Gadolinium(III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☑Y verify (what is ☑Y☒N ?)
Infobox references

Europium(III) oxide (Eu2O3), is a chemical compound of europium and oxygen. It is widely used as a red or blue phosphor in television sets and fluorescent lamps, and as an activator for yttrium-based phosphors. It is also an agent for the manufacture of fluorescent glass. Europium fluorescence is used in the anti-counterfeiting phosphors in Euro banknotes.[2]

Europium oxide has two common structures: Monoclinic (mS30, SpaceGroup = C2/m, No. 12) and cubic (cI80, SpaceGroup = Ia-3, No. 206). The cubic structure is similar to that of manganese(III) oxide.

It may be formed by ignition of europium metal.

It can react with acids to form the corresponding europium(III) salts.

Gallery

References


This page was last edited on 23 July 2017, at 23:05
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