Europium Oxide, also called Europia, is used as a phosphor activator, color cathode-ray tubes and liquid-crystal displays used in computer monitors and televisions employ europium oxide as the red phosphor; no substitute is known. Europium Oxide is also applied in speciality plastic for laser material. Formula: Eu2O3 CAS No.: 1308-96-9 Molecular Weight: 351.92 Appearance: White Solubility: Insoluble in water, moderately soluble in strong mineral acids Stability: Slightly hygroscopic Purity: Eu2O3/TREO 99.995-99.999% TREO≥99% LOI≤1% Rare Earth Impurities: Nd2O3≤5ug/g Sm2O3≤10ug/g Y2O3≤5ug/g CeO2≤5ug/g Non Rare Earth Impurities: CuO≤10ug/g Fe2O3≤5ug/g PbO≤5ug/g SiO2≤25ug/g NiO≤5ug/g CaO≤10ug/g