http://inspire.ec.europa.eu/codelist/CommodityCodeValue/yttriumOxideINSPIRE Registry teamJRC-INSPIRE-SUPPORT@ec.europa.euhttp://inspire.ec.europa.eu/registry2015-08-18 18:12 PM CEST2015-08-18 18:12 PM CESTyttrium oxideYttrium oxide, also known as yttria is an air-stable, white solid substance. Used to make Eu:YVO4 and Eu:Y2O3 phosphors that give the red color in color TV picture tubes, to make yttrium iron garnets used in microwave filters, and to make the high temperature superconductor YBa2Cu3O7. - http://en.wikipedia.org/wiki/Yttrium_oxide