Dysprosium oxide 

 Dysprosium oxide; Dysprosium Oxide; Dysprosium (III) oxide 
 Alias: dysprosium oxide 
 Dysprosium oxide, as a white powder, chemical formula Dy2O3, density 7.81 (27 ℃), melting point 2340 ℃, the boiling point of about 4000 ℃, for the ionic compounds, dissolved with acid and ethanol. , But does not dissolve in alkali, is not soluble in water. Can be made of the thermal decomposition of dysprosium hydroxide, high heat of formation, exposed in air will absorb some of carbon dioxide into carbonic acid dysprosium. Properties: white or light yellow dysprosium oxide powder. 

 Properties: white crystalline powder, insoluble in water, soluble in acid and ethanol. Easily when exposed in air to absorb carbon dioxide into carbonic acid dysprosium. 

 Preparation: dysprosium nitrate solution reacts with sodium hydroxide solution dysprosium hydroxide, the separation after the burning, get dysprosium oxide: 2Dy (OH) 3 - → Dy2O3 +3 H2O 

 Main use: Uses: Preparation of dysprosium used as raw materials, glass, NdFeB magnet additive, also used for metal halide, magneto-optical memory materials, yttrium iron or yttrium aluminum garnet, atomic energy industry. Dysprosium oxide can be used as an additive NdFeB permanent magnet system used in this magnet to add 2 to 3% of Dy, can increase the coercivity, the past is not the demand for dysprosium, but with the NdFeB magnet increased demand, it became necessary to add elements, quality must be 95 to 99 9%, demand is also increasing rapidly. Preparation of dysprosium oxide is also used as raw material for dysprosium metal, glass, NdFeB magnet additive, also used for metal halide, magneto-optical memory materials, yttrium iron or yttrium aluminum garnet, atomic energy industry. 

 Of yttrium oxide (Y2o3) 99.9% 280 元 / kg 99.99% 330 yuan / kg 
 Lanthanum oxide (La2o3) 99.9% 120 元 / kg 99.99% 150 yuan / kg 
 Cerium oxide (Ceo2) 99.9% 130 元 / kg 99.99% 320 yuan / kg 
 Praseodymium oxide (Pr6on) 99.9% 500 元 / kg 99.99% 700 yuan / kg 
 Neodymium oxide (Nd2o3) 99.9% 750 元 / kg 99.99% 1000 yuan / kg 
 Samarium oxide (Sm2o3) 99.9% 150 元 / kg 99.99% 260 yuan / kg 
 Europium oxide (Eu2o3) 99.9% 13500 元 / kg 99.99% 17500 yuan / kg 
 Gadolinium oxide (Gd2o3) 99.9% 320 元 / kg 99.99% 450 yuan / kg 
 Terbium oxide (Tb4o3) 99.9% 13500 元 / kg 99.99% 17000 yuan / kg 
 Dysprosium oxide (Dy2o3) 99.9% 8500 元 / kg 99.99% 11500 yuan / kg 
 Holmium oxide (Ho2o3) 99.9% 2800 元 / kg 99.99% 3500 yuan / kg 
 Erbium oxide (Er2o3) 99.9% 750 元 / kg 99.99% 1200 yuan / kg 
 Thulium oxide (Tm2o3) 99.9% 6500 元 / kg 99.99% 9500 yuan / kg 
 Ytterbium oxide (Yb2o3) 99.9% 350 元 / kg 99.99% 500 yuan / kg 
 Lutetium oxide (Lu2o3) 99.9% 12000 元 / kg 99.99% 14500 yuan / kg