Erbium(III) oxide is the inorganic compound with the formula Er₂O₃. It is a pink paramagnetic solid. It is slightly soluble in inorganic acids, insoluble in water, and transforms into hexagonal crystals when heated to 1300 °C, and does not melt. It finds uses in various optical materials.

Properties

Chemical Formula: Er₂O₃

Appearance: Pink powder

Density: 8.64 g/cm³

Melting Point: 2344 °C

Boiling Point: 3290 °C

Water solubility: slightly soluble in inorganic acids, insoluble in water

Uses

It is mainly used as yttrium iron garnet additives and nuclear reactor control materials, and is also used in the manufacture of special luminescent glass and glass that absorbs infrared rays, and is also used as a glass colorant.