Dysprosium Oxide Formula: Dy2O3; M.Wt: 373. 02 RE purity: Min99. 9% RE impurities: Max 100ppm; Gd2O3 max 0.015%; Tb4O7 max 0.015%; Ho2O3 max 0.01%; Er2O3 max 0.01%; Tm2O3 max 0.01%; Yb2O3 max 0.01%; Lu2O3 max 0.01%; Y2O3 max 0.01%. TREO: Min99% Non-RE impurities: Fe2O3 max 7ppm/SiO2 max 30ppm/CaO max 30ppm/Cl- max150ppm Loss on ignition: Max 1%. DESCRIPION: White powder, insoluble in water, soluble in acids.  USES: As additive for garnet and permanent magnets, and in the making of metal halide lamp and neutron-controlling bar in nuclear reactor.  PACKING: In plastic drums of 25KG net each with sealed double PVC plastic bags inside, tow drums packed in a carton of 50KG net each.