Yttrium oxide, also known as yttria, is Y2O3. It is an air-stable, white solid substance. Yttrium oxide is used as a common starting material for both materials science as well as inorganic compounds.
Y 6591 (OTTO) Yttrium oxide, pieces, ≥99.99% Cas no 1314-36-9 - used in the manufacturing of neodymium Nd:YAG lasers and in components of MOS and LED transistors.