YTTRIUMOXIDE,POWDER;Yttriumoxid;Yttrium(III) oxide, REacton(R), 99.9999% (REO);Yttrium(III) oxide, REacton(R), 99.999% (REO);Yttrium(III) oxide sputtering target, 50.8mm (2.0in) dia x 3.18mm (0.125in) thick, 99.99% (metals basis);Y2O3 A YTTRIUMOXIDE GRADE A - A PRODUCT OF H.C. STARCK;YTTRIUM OXIDE: 99.9995%;Y2O3 B YTTRIUMOXIDE GRADE B - A PRODUCT OF H.C. STARCK