1313-97-9 Usage
Description
Neodymium oxide, also known as neodymium trioxide, neodymium (III) oxide, neodymium sesquioxide, and dineodymium trioxide, is an inorganic compound containing the inner transition metal neodymium from the lanthanides series in a +3 oxidation state and oxide in a 2:3 ratio. It adopts a hexagonal crystal structure and is characterized by its blue powder form, hexagonal crystals, red fluorescence, a density of 7.24 g/cm3, and a melting point around 1,900°C. Neodymium oxide is practically insoluble in water and dissolves in acids.
Uses
1. Used in Glass and Ceramics Industry:
Neodymium oxide is used as a colorant for coloring glass and as a pigment for ceramics. It is particularly effective in counteracting the color of iron in glass, providing a light-blue hue.
2. Used in Electronics Industry:
Neodymium oxide is used as a material for ceramic capacitors, which are essential components in various electronic devices.
3. Used in Manufacturing Color TV Tubes:
The compound is utilized in the production of color television tubes, enhancing the display quality and color accuracy.
4. Used in Carbon Arc-Light Electrodes:
Neodymium oxide is employed in the creation of carbon arc-light electrodes, which are used in lighting systems for their high brightness and energy efficiency.
5. Used as a Dehydrogenation Catalyst:
The compound serves as a catalyst in the dehydrogenation process, which is crucial in various chemical reactions and industrial applications.
6. Used in Refractories:
Neodymium oxide is also used in the production of refractory materials, which are essential for high-temperature applications and maintaining structural integrity in extreme conditions.
Production Methods
Neodymium oxide is produced from the two principal rare earth minerals, monazite, and bastnasite. The oxide is obtained as an intermediate in the recovery of neodymium metal (See Neodymium).The oxide also may be formed by thermal dissociation of neodymium oxalate, hydroxide or carbonate:Nd2(C2O4)3 → Nd2O3 + 6CO22Nd(OH)3 → Nd2O3 + 3H2ONd2(CO3)3 → Nd2O3 + 3CO2.
Reactions
The anhydrous oxide absorbs moisture from the air at ambient temperatures forming hydrated oxide. The oxide also absorbs carbon dioxide from air, forming neodymium carbonate.
Neodymium oxide dissolves in strong mineral acids forming corresponding neodymium salts:
Nd2O3 + 3H2SO4 → Nd2(SO4)3 + 3H2O
Reactions with acetic and other organic acids produce corresponding salts. When heated with ammonium chloride at 300 to 400°C, the oxide converts to chloride liberating ammonia and water:
Nd2O3 + 6NH4Cl → 2NdCl3 + 6NH3 + 3H2O
When heated with hydrogen fluoride, the product is neodymium fluoride:
Nd2O3 + 6HF → 2NdF3 + 3H2O
The oxide is reduced to neodymium metal when heated with hydrogen, carbon monoxide, or other reducing agents.
Flammability and Explosibility
Nonflammable
Safety Profile
Low toxicity by
ingestion.
Purification Methods
Dissolve it in HClO4, precipitate it as the oxalate with doubly recrystallised oxalic acid, wash it free of soluble impurities, dry it at room temperature and ignite it in a platinum crucible at higher than 850o in a stream of oxygen. It is a blue powder. [Tobias & Garrett J Am Chem Soc 80 3532 1958.]
References
https://en.wikipedia.org/wiki/Neodymium#Neodymium_glass_for_other_applications
https://en.wikipedia.org/wiki/Neodymium(III)_oxide
https://books.google.kg/books?id=KbZkxDyeG18C&pg=PA102&dq=%22Neodymium+oxide%22&redir_esc=y#v=onepage&q=%22Neodymium%20oxide%22&f=false
Check Digit Verification of cas no
The CAS Registry Mumber 1313-97-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,3,1 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1313-97:
(6*1)+(5*3)+(4*1)+(3*3)+(2*9)+(1*7)=59
59 % 10 = 9
So 1313-97-9 is a valid CAS Registry Number.
InChI:InChI=1/2Nd.3O/rNd2O3/c3-1-5-2-4