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Neodymium oxide

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Neodymium oxide Basic information

Product Name:
Neodymium oxide
Synonyms:
  • NEODYMIUM OXIDE
  • NEODYMIUM(III) OXIDE
  • dineodymiumtrioxide
  • Neodymium(III) oxide, 99.99% metals basis
  • NEODYMIUM(III) OXIDE, NANOPOWDER, 99.9%
  • NEODYM OXIDE
  • NEODYMIUM OXIDE, 99.9%
  • NeodymiumOxide99.9%Gr
CAS:
1313-97-9
MF:
Nd2O3
MW:
336.48
EINECS:
215-214-1
Product Categories:
  • metal oxide
  • Rare earth
  • Catalysis and Inorganic Chemistry
  • Chemical Synthesis
  • Neodymium
  • NeodymiumMetal and Ceramic Science
  • Inorganics
  • Oxides
  • 60: Nd
  • NeodymiumNanomaterials
  • Materials Science
  • Nanomaterials
  • Nanoparticles: Oxides, Nitrides, and Other CeramicsChemical Synthesis
  • Nanopowders and Nanoparticle Dispersions
Mol File:
1313-97-9.mol
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Neodymium oxide Chemical Properties

Melting point:
2270 °C
Boiling point:
3760℃[at 101 325 Pa]
Density 
7.24 g/mL at 20 °C(lit.)
storage temp. 
no restrictions.
solubility 
insoluble in H2O; soluble in dilute acid solutions
form 
Sintered Lump
Specific Gravity
7.24
color 
light blue
Water Solubility 
insoluble
Crystal Structure
La2O3 type
crystal system
Three sides
Merck 
14,6450
Space group
P3m1
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.38290.38290.600290901200.0762
InChI
InChI=1S/2Nd.3O
InChIKey
HBPPDPSYLUIKHU-UHFFFAOYSA-N
SMILES
O([Nd]=O)[Nd]=O
CAS DataBase Reference
1313-97-9(CAS DataBase Reference)
EPA Substance Registry System
Neodymium oxide (Nd2O3) (1313-97-9)
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Safety Information

Hazard Codes 
Xi
Safety Statements 
24/25
WGK Germany 
1
RTECS 
QP0185000
3
TSCA 
Yes
HS Code 
28469013
Toxicity
LD50 orally in Rabbit: > 5000 mg/kg

MSDS

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Neodymium oxide Usage And Synthesis

Chemical Properties

Neodymium Oxide, Nd2O3 is a blue-grey powder that is composed of the rare earth neodymium and oxygen. hygroscopic; absorbs atmospheric CO2; hexagonal; has slightly red fluorescence. Water insoluble, soluble in acids. It has special properties that make it very useful to the glass and ceramics industries. Neodymium Oxide gives a good aqua color in most glaze bases at 1-2%. At 4-7% it gives a pleasant lavender/grape color that appears as a different color under different artificial light sources. It is very strongly affected by iron, particularly in oxidation, giving a reliable perfect neutral transparent gray. Avoid trace iron impurities to achieve the brightest blue and lavender colors.

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

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. It used as ceramic capacitors, coloring glass, carbon arc-light electrodes, color TV tubes, dehydrogenation catalyst, (65%) To counteract color of iron in glass.

Uses

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.

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 + 6CO2
2Nd(OH)3 → Nd2O3 + 3H2O
Nd2(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

Non flammable

Toxicology

Neodymium oxide is belong to a rare earth metal. These metals are moderately to highly toxic. The symptoms of toxicity of the rare earth elements include writhing, ataxia, labored respiration, walking on toes with arched back and sedation.

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

Neodymium oxide Preparation Products And Raw materials

Raw materials

Preparation Products

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