Dysprosium(III) oxide

Dysprosium oxide (Dy2O3) is a sesquioxide compound of the rare earth metal dysprosium. It is a pastel yellowish-greenish, slightly hygroscopic powder having specialized uses in ceramics, glass, phosphors, lasers, as a Faraday rotator[3] and dysprosium metal halide lamps.

Dysprosium(III) oxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.786
UNII
  • InChI=1S/2Dy.3O checkY
    Key: NLQFUUYNQFMIJW-UHFFFAOYSA-N checkY
  • InChI=1/2Dy.3O/rDy2O3/c3-1-5-2-4
    Key: NLQFUUYNQFMIJW-XDEDGNAWAZ
  • O=[Dy]O[Dy]=O
Properties
Dy2O3
Molar mass 372.998 g/mol
Appearance pastel yellowish-greenish powder.
Density 7.80 g/cm3
Melting point 2,408 °C (4,366 °F; 2,681 K)[1]
Negligible
+89,600·10−6 cm3/mol
Structure
Cubic, cI80
Ia3, No. 206[2]
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Non-Toxic
Safety data sheet (SDS) External MSDS
Related compounds
Other anions
 Dysprosium(III) chloride
Other cations
 Terbium(III) oxide, Holmium(III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

It can react with acids to produce the corresponding dysprosium(III) salts:

Dy2O3 + 6 HCl → 2 DyCl3 + 3 H2O

References
  1. Webelements Dysprosium trioxide
  2. Curzon A.E., Chlebek H.G. (1973). "The observation of face centred cubic Gd, Tb, Dy, Ho, Er and Tm in the form of thin films and their oxidation". J. Phys. F. 3 (1): 1–5. Bibcode:1973JPhF....3....1C. doi:10.1088/0305-4608/3/1/009.
  3. Vojna, David; Slezák, Ondřej; Yasuhara, Ryo; Furuse, Hiroaki; Lucianetti, Antonio; Mocek, Tomáš (2020). "Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths". Materials. 13 (23): 5324. Bibcode:2020Mate...13.5324V. doi:10.3390/ma13235324. PMC 7727863. PMID 33255447.


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