Europium oxide

Chinese name: europium oxide

Chinese alias: europium oxide
English Name: europium oxide; europia
Chemical formula: Eu2O3
Molecular weight: 351.9262
CAS: 12020-60-9; 12770-85-3
EINECS No.: 234-660-8
Melting point: 2002 ℃
Solubility in water: insoluble in water.
Density: 7.42.g / cm3
Nature Description:
With pale red powder.

Application:

Used as a color TV red phosphor activator, high-pressure mercury lamp phosphors.
Preparation:
Extraction method to process monazite or mixed rare earth chloride solution, the resulting ore as raw material. -HCl-ReCl3 with P204- coal extraction system, first, neodymium, samarium grouped extraction raffinate to light rare earth,samarium and heavy rare earths extracted into the organic phase, followed by 2.0mg / L HCl stripping the earth, was thesamarium rare earth enrichment by zinc reduction, alkalinity extraction of europium in by oxalic acid precipitation, separation, drying, burning prepared europium oxide.

Safety:
Salts of rare earth elements can reduce blood levels of plasminogen, inactivating and inhibiting the generation ofthromboplastin, fibrinogen precipitated, catalytic decomposition of a phosphoric acid compound. Rare earth elements withatomic weight increases toxicity weakened. Respirators need to work with when, if you want to make a special radiologicalprotection should prevent scattering of dust.
Flammable hazardous characteristics: non-combustible.