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, dysprosium metal halide lamps, and as a Faraday rotator.^[3]

Dysprosium(III) oxide

Identifiers
CAS Number	1308-87-8 Y
3D model (JSmol)	Interactive image
ChemSpider	3296880 Y
ECHA InfoCard	100.013.786
PubChem CID	159370
UNII	Y423N8C3EV Y
CompTox Dashboard (EPA)	DTXSID20276467
InChI InChI=1S/2Dy.3O Y Key: NLQFUUYNQFMIJW-UHFFFAOYSA-N Y InChI=1/2Dy.3O/rDy2O3/c3-1-5-2-4 Key: NLQFUUYNQFMIJW-XDEDGNAWAZ
SMILES O=[Dy]O[Dy]=O
Properties
Chemical formula	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]
Solubility in water	Negligible
Magnetic susceptibility (χ)	+89,600·10−6 cm3/mol
Structure
Crystal structure	Cubic, cI80
Space group	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). Y verify (what is YN ?) Infobox references

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

Dy₂O₃ + 6 HCl → 2 DyCl₃ + 3 H₂O