1313-97-9 Usage
Chemical Properties
pure material is a blue powder(s); technical material has a brown color; hygroscopic; absorbs atmospheric CO2; hexagonal; has slightly red fluorescence; used in ceramic capacitors, in coloring glass, and in television tubes, and as an evaporated material of 99.9% purity, it is possibly reactive to radio frequencies [HAW93] [MER06] [CER91]
Physical properties
Blue powder; hexagonal crystals; fluoresces red; density 7.24 g/cm3; melts around 1,900°C; practically insoluble in water, 30 mg/L at 75°C; dissolves in acids.
Uses
Different sources of media describe the Uses of 1313-97-9 differently. You can refer to the following data:
1. Neodymium oxide (Nd2O3) is a light-blue powder used to color glass and as a pigment for ceramics. It is also used to make color TV tubes.
2. (65%) To counteract color of iron in glass.
(Purified grade) Ceramic capacitors, coloring glass,
refractories, carbon arc-light electrodes, color TV
tubes, dehydrogenation catalyst
3. ceramic capacitors, coloring glass, carbon arc-light electrodes, color TV tubes, dehydrogenation catalyst.Neodymium(III) oxide is an inorganic compound containing inner transition metal neodymium from lanthanides series in +3 oxidation state and oxide in 2:3 ratio. It adopts a hexagonal crystal structure. It is also known as neodymium oxide, neodymiumtrioxide, neodymium(3+)oxide, neodymium sesquioxide and dineodymiumtrioxide.
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
