Erbium(III) chloride, is a violet solid with the formula ErCl3. It is used in the preparation of erbium metal.
Molar mass：381.71 g/mol
Appearance：pink hygroscopic crystals
Solubility in water：slightly soluble in ethanol
Erbium(III) chloride hydrate is used as a starting material for new edge-bridged octahedral M6 cluster compounds such as CsErTa6Cl18, for which electron and stability studies were performed.