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Eu2O3 Europium Oxide CAS 1308-96-9

Europium oxide is a rare earth oxide with the chemical formula Eu2O3. Molecular weight 351.92. Light rose red powder, hygroscopic, with slight color differences due to different manufacturing methods. With different heating temperatures, two types of crystal structures can be obtained: quasi cubic crystal system and equiaxed crystal system, the latter of which has the same crystal structure as scandium oxide. Relative density 7.42, melting point 2330 ℃. Insoluble in water, soluble in inorganic acids to form trivalent europium salt solutions of corresponding acids, also soluble in formic acid and acetic acid, able to absorb carbon dioxide from the air to form carbonates
 
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  • 1308-96-9

  • bosschem

  • 1308-96-9

Europium Oxide (Eu2O3 )

CAS 1308-96-9


Alais: dieuropiumtrioxide;Europia;europiumoxide(eu2o3)

Molecular formula: Eu2O3

Molecular weight:  351.93

Structural formula: 

氧化铕 结构式

1.Performance and use

Europium oxide is a rare earth oxide with the chemical formula Eu2O3. Molecular weight 351.92. Light rose red powder, hygroscopic, with slight color differences due to different manufacturing methods. With different heating temperatures, two types of crystal structures can be obtained: quasi cubic crystal system and equiaxed crystal system, the latter of which has the same crystal structure as scandium oxide. Relative density 7.42, melting point 2330 ℃. Insoluble in water, soluble in inorganic acids to form trivalent europium salt solutions of corresponding acids, also soluble in formic acid and acetic acid, able to absorb carbon dioxide from the air to form carbonates

1. Used for manufacturing color TV phosphors and tricolor phosphors for lamps

2. As an activator for X-ray intensifying screens


2. Technical indicators


Europium Oxide Basic information
Product Name: Europium Oxide
Synonyms: dieuropiumtrioxide;Europia;europiumoxide(eu2o3);europiumsesquioxide;europiumtrioxide;EUROPIUM(III) OXIDE, 99.99%;Europium (III) oxide (99.99% Eu) (REO) PURATREM;EuropiumoxideREOrosepowder
CAS: 1308-96-9
MF: Eu2O3
MW: 351.93
EINECS: 215-165-6
Mol File: 1308-96-9.mol
Europium Oxide Chemical Properties
Melting point 2291°C
density 7.42 g/mL at 25 °C(lit.)
storage temp. no restrictions.
form nanopowder
color White to slightly pink
Specific Gravity 7.42
Water Solubility Soluble in acids. Insoluble in water.
Sensitive Hygroscopic
Merck 143,904
InChIKey RSEIMSPAXMNYFJ-UHFFFAOYSA-N
CAS DataBase Reference 1308-96-9(CAS DataBase Reference)
NIST Chemistry Reference europium(III) trioxide(1308-96-9)
EPA Substance Registry System Europium oxide (Eu2O3) (1308-96-9)



Index              Model Eu2O3.3N Eu2O3.4N Eu2O3.5N Eu2O3.6N
Eu2O3/TREO(%,min) 99.9 99.99 99.999 99.9999
TREO(%,min) 99.0 99.0 99.0 99.9
Appearance Light Red Powder Light Red Powder Light Red Powder Light Red Powder
RE Impurities/TREO %(Max) %(Max) ppm(Max) ppm(Max)
La2O3 0.001 0.0005 1 0.1
CeO2 0.001 0.0005 1 0.1
Pr6O11 0.001 0.0005 1 0.1
Nd2O3 0.001 0.0005 1 0.1
Sm2O3 0.05 0.001 2 0.5
Eu2O3 Main Main Main Main
Gd2O3 0.05 0.001 1 0.5
Tb4O7 0.001 0.001 1 0.1
Dy2O3 0.001 0.001 1 0.1
Ho2O3 0.001 0.0005 1 0.1
Er2O3 0.001 0.0005 1 0.1
Tm2O3 0.001 0.0005 1 0.1
Yb2O3 0.001 0.0005 1 0.1
Lu2O3 0.001 0.0005 1 0.1
Y2O3 0.001 0.0005 1 0.1
Non-Re Impurities %(Max) %(Max) ppm(Max) ppm(Max)
Fe2O3 0.001 0.0005 30 2.0
SiO2 0.01 0.005 10 3.0
CaO 0.01 0.003 10 3.0
CoO \ \ \ \
NiO 0.001 0.0005 2.0 1.0
CuO 0.001 0.0005 1.0 1.0
MnO2 \ \ \ \
Cr2O3 \ \ \ \
CdO \ \ \ \
PbO 0.001 0.0005 2.0 1.0
Al2O3 \ \ \ \
Na2O \ \ \ \
K2O \ \ \ \
MgO \ \ \ \
TiO2 \ \ \ \
ThO2 \ \ \ \
L.O.I(%,Max) 1.0 1.0 0.5 0.5
Size(D50,um) 2.5-6.0um 2.5-6.0um 2.5-6.0um 2.5-6.0um
Memo Can custom-made as per request.


3. Packaging and storage

Package :  25kg/drum

Storage :Storage conditions for europium oxide: Store in a dark, dry, and cool place, and avoid mixing with toxic or harmful substances during transportation


4. Related keywords

Organic and inorganic pigments

Eu2O3

Europium Oxide 

CAS 1308-96-9





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