Neodymium oxide: light blue dark blue solid powder becomes damp. Easy to damp, absorb atmospheric carbon dioxide, insoluble in water, soluble in mineral acids. The relative density of 7.24g / cm3. The temperature of about 1900 ℃, the heating can be part of the high price of neodymium oxide generated in the air. Very slightly soluble in water, its solubility 0.00019g / 100mL water (20 ℃) ??and 0.003g / 100ml water (75 ℃). Neodymium oxide is mainly used for glass, ceramics, colorants, manufacturing materials and ferromagnetic materials NdFeB Neodymium. 1.5% to 2.5% neodymium oxide nano-magnesium alloy or aluminum, it can improve the high temperature properties of the alloy, tightness and corrosion resistance, widely used as aerospace materials. In addition, nano-doped yttrium oxide neodymium oxide nano-aluminum-garnet laser beam generating shortwave, widely used in industry thickness below 10mm thin material welding and cutting. In the medical, neodymium oxide doped nano Nano YAG laser instead of a scalpel for removal surgery or trauma mouth disinfection. Neodymium oxide nanoparticles are also used for coloring glass and ceramics and rubber products and additives.