Erbium(III) chloride

Erbium(III) chloride
Names
	IUPAC name Erbium(III) chloride
	Other names Erbium trichloride
Identifiers
CAS Number	10138-41-7 (anhydrous) ;
3D model (JSmol)	Interactive image;
ChemSpider	59656 ;
ECHA InfoCard	100.030.337
EC Number	233-385-0;
PubChem CID	66277;
UNII	867J5QOF46 ;
CompTox Dashboard (EPA)	DTXSID5064966 ;
	InChI InChI=1S/3ClH.Er/h31H;/q;;;+3/p-3 Key: HDGGAKOVUDZYES-UHFFFAOYSA-K ; InChI=1/3ClH.Er/h31H;/q;;;+3/p-3 Key: HDGGAKOVUDZYES-DFZHHIFOAE;
	SMILES Cl[Er](Cl)Cl;
Properties
Chemical formula	ErCl3 (anhydrous); ErCl3·6H2O (hexahydrate)
Molar mass	273.62 g/mol (anhydrous); 381.71 g/mol (hexahydrate)
Appearance	violet hygroscopic monoclinic crystals (anhydrous); pink hygroscopic crystals (hexahydrate)
Density	4.1 g/cm3 (anhydrous)
Melting point	776 °C (1,429 °F; 1,049 K) (anhydrous); decomposes (hexahydrate)
Boiling point	1,500 °C (2,730 °F; 1,770 K)
Solubility in water	soluble in water (anhydrous); slightly soluble in ethanol (hexahydrate)
Structure
Crystal structure	monoclinic
Space group	C2/m, No. 12
Lattice constant	a = 6.80 Å, b = 11.79 Å, c = 6.39 Å α = 90°, β = 110.7°, γ = 90°
Lattice volume (V)	479 Å3
Formula units (Z)	4
Related compounds
Other anions	Erbium(III) oxide
Other cations	Holmium(III) chloride, Thulium(III) chloride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Erbium(III) chloride is a violet solid with the formula ErCl₃. It is used in the preparation of erbium metal.

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