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Europium(III) Oxide

Europium(III) Oxide (Eu2O3) is a chemical compound of europium and oxygen. Europium oxide has also other names as Europia, Europium trioxide. Europium oxide has a pinkish white color. Europium oxide has two different structures: cubic and monoclinic. The cubic structured europium oxide is almost same as magnesium oxide structure. Europium oxide has negligible solubility in water, but readily dissolves in mineral acids. Europium oxide is thermally stable material that has melting point at 2350 oC. Europium oxide’s multi-efficient properties like magnetic, optical and luminescence properties make this material very important. Europium oxide has an ability to absorb moisture and carbon dioxide in atmosphere.

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Europium(III) Oxide Properties



CAS No. 1308-96-9
Chemical formula 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)
Solubility in water Negligible
Magnetic susceptibility (χ) +10,100·10−6 cm3/mol
Thermal conductivity 2.45 W/(m K)


High Purity Europium(III) Oxide Specification

Particle Size(D50)                      3.94 um

Purity(Eu2O3)                             99.999%

TREO(Total Rare Earth Oxides)   99.1%

RE Impurities Contents ppm Non-REEs Impurities ppm
La2O3 <1 Fe2O3 1
CeO2 <1 SiO2 18
Pr6O11 <1 CaO 5
Nd2O3 <1 ZnO 7
Sm2O3 <1 CL¯ <50
Gd2O3 2 L.O.I <0.8%
Tb4O7 <1    
Dy2O3 <1    
Ho2O3 <1    
Er2O3 <1    
Tm2O3 <1    
Yb2O3 <1    
Lu2O3 <1    
Y2O3 <1    
【Packaging】25KG/bag Requirements:moisture proof,dust-free,dry,ventilate and clean.


What is Europium(III) Oxide used for?

Europium(III) Oxide (Eu2O3) 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.Europium oxide has a great potential as photoactive materials for the photocatalytic degradation of organic pollutants.


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