Europium Oxide CAS#1308-96-9
High Thermal Stability
With a melting point of 2330 °C, europium oxide maintains excellent performance under high-temperature processing and demanding industrial conditions.
Controllable Crystal Structure
Different heating temperatures allow formation of distinct crystal systems, offering flexibility for material design and specialized applications.
Good Chemical Reactivity
Insoluble in water but readily soluble in inorganic, formic, and acetic acids, enabling efficient conversion to trivalent europium salts for further use.
High Density and Material Purity Potential
High relative density and stable rare-earth oxide composition make it suitable for advanced materials, optical, and electronic applications.
Product Description of Europium Oxide CAS#1308-96-9
Europium oxide is a white to slightly pink powder, with color variations depending on the production method. It is hygroscopic and can form two crystal variants—pseudo-trigonal and equiaxed—depending on the heating temperature, with the equiaxed form sharing the same structure as scandium oxide. The compound has a relative density of 7.42 and a melting point of 2330 °C. Insoluble in water, europium oxide can dissolve in inorganic acids to form trivalent europium salts and is also soluble in formic and acetic acids. Additionally, it absorbs carbon dioxide from the air, forming europium carbonate.
Europium Oxide Chemical Properties
| Melting point | 2291°C |
| density | 7.42 g/mL at 25 °C(lit.) |
| storage temp. | no restrictions. |
| solubility | insoluble in H2O; soluble in acid solutions |
| form | nanopowder |
| color | White to slightly pink |
| Specific Gravity | 7.42 |
| Odor | no odor |
| Water Solubility | Soluble in acids. Insoluble in water. |
| Sensitive | Hygroscopic |
| Crystal Structure | Cubic |
| crystal system | Monoclinic |
| Merck | 143,904 |
| Space group | C2/m |
| Lattice constant | a/nmb/nmc/nmα/oβ/oγ/oV/nm31.411050.360210.880890100.037900.4408 |
| InChI | 1S/2Eu.3O |
| InChIKey | RSEIMSPAXMNYFJ-UHFFFAOYSA-N |
| SMILES | O=[Eu]O[Eu]=O |
| 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) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 2 |
| RTECS | LE8053000 |
| TSCA | TSCA listed |
| HS Code | 28469014 |
| Storage Class | 11 - Combustible Solids |
| Toxicity | rat,LD50,oral,> 5gm/kg (5000mg/kg),Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 12, Pg. 616, 1993. |
Product Application of Europium Oxide CAS#1308-96-9
Europium oxide (Eu₂O₃) is widely used as an additive in infrared-sensitive phosphors to enhance red color performance in television and computer display picture tubes. It is also incorporated into fluorescent lamp tubes to improve luminous efficiency and is applied in certain materials for laser production. Owing to its strong neutron-absorbing capability, europium oxide is additionally utilized in nuclear reactor control rods.
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