| Identification | More | [Name]
Neodymium oxide | [CAS]
1313-97-9 | [Synonyms]
NEODYMIUM(III) OXIDE
NEODYMIUM OXIDE
dineodymiumtrioxide
Neodymia
neodymium(3+)oxide
neodymiumoxide(nd2o3)
neodymiumsesquioxide
neodymiumtrioxide
NeodymiumoxideREObluepowder
Neodymium(III) oxide, 99.99% metals basis
NEODYMIUM(III) OXIDE, NANOPOWDER, 99.9%
NEODYM OXIDE
NEODYMIUM OXIDE, 99.9%
NeodymiumOxide99.9%Gr
Neodymium(III) oxide, 99.9%
Neodymium(III)-oxide, 99.90%
Neodymium(III)-oxide, 99.999%
NEODYMIUM OXIDE NANO-DISPERSION
NEODYMIUM OXIDE, 99.99%
NEODYMIUM OXIDE, 99.999% | [EINECS(EC#)]
215-214-1 | [Molecular Formula]
Nd2O3 | [MDL Number]
MFCD00011134 | [Molecular Weight]
336.48 | [MOL File]
1313-97-9.mol |
| Chemical Properties | Back Directory | [Appearance]
blue powder | [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 | [color ]
Yellow | [Specific Gravity]
7.24 | [Water Solubility ]
insoluble | [Merck ]
14,6450 | [Uses]
(65%) To counteract color of iron in glass.
(Purified grade) Ceramic capacitors, coloring glass,
refractories, carbon arc-light electrodes, color TV
tubes, dehydrogenation catalyst | [CAS DataBase Reference]
1313-97-9(CAS DataBase Reference) | [EPA Substance Registry System]
1313-97-9(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Safety Statements ]
S24/25:Avoid contact with skin and eyes . | [WGK Germany ]
1 | [RTECS ]
QP0185000 | [F ]
3 | [TSCA ]
Yes | [HS Code ]
28469013 | [Safety Profile]
Low toxicity by
ingestion. | [Toxicity]
LD50 orally in Rabbit: > 5000 mg/kg |
| Questions and Answers (Q&A) | Back Directory | [Description]
Neodymium (III) Oxide is characterized by sharp emissions bands, and thus it has special properties when used as a doping agent for glass, in applications including glasses, light bulbs and lasers, to make a product known as neodymium, or alexandrite glass. Its absorption of yellow wavelengths makes it appear in different colors depending on light composition: blue under fluorescent light, and red under natural or incandescent light, which contains less light on the violet end of the spectrum. This property makes it useful for applications requiring color band filtering, such as photography (including astronomical photography), welding glasses, and automotive mirrors.
| [Uses]
Neodymium Oxide, also called Neodymia, mainly used for glass and capacitors. Colours glass delicate shades ranging from pure violet through wine-red and warm gray. Light transmitted through such glass shows unusually sharp absorption bands. The glass is used in astronomical work to produce sharp bands by which spectral lines may be calibrated. Glass containing neodymium is a laser material in place of ruby to produce coherent light.
Neodymium oxide is incorporated into glass to impart a bright purple color. It also is used in protective filter lenses for welding and glass-blowing goggles; and for polishing glasses. The compound is applied as a doping material for yttrium aluminum microwave devices; and to activate calcium tungstate, calcium silicate, and other host crystals for their applications in room temperature lasers. The oxide also is used as a catalyst for dehydrogenation of alcohol.
| [Preparation]
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.
|
| Hazard Information | Back Directory | [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. | [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. | [Flammability and Explosibility]
Nonflammable | [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. | [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
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