Dysprosium(III) oxide

Dysprosium(III) oxide
1308-87-8 YesY
3D model (Jmol) Interactive image
ChemSpider 3296880 YesY
ECHA InfoCard 100.013.786
PubChem 159370
Molar mass 372.998 g/mol
Appearance White powder.
Density 7.80 g/cm3
Melting point 2,408 °C (4,366 °F; 2,681 K)[1]
Cubic, cI80
Ia-3, No. 206[2]
Main hazards Non-Toxic
Safety data sheet 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

Dysprosium Oxide (Dy2O3) is a white, slightly hygroscopic powder having specialized uses in ceramics, glass, phosphors, lasers and dysprosium metal halide lamps.

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

Dy2O3 + 6 HCl → 2 DyCl3 + 3 H2O


  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: 1–5. doi:10.1088/0305-4608/3/1/009.
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