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Lanthanum oxide

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Lanthanum oxide  Structure
Lanthanum oxide
  • CAS No.1312-81-8
  • Chemical Name:Lanthanum oxide
  • CBNumber:CB7464647
  • Molecular Formula:La2O3
  • Formula Weight:325.81
  • MOL File:1312-81-8.mol
Lanthanum oxide Property
  • Melting point: :2315 °C
  • Boiling point: :4200 °C
  • Density  :6.51 g/mL at 25 °C(lit.)
  • Flash point: :4200°C
  • storage temp.  :no restrictions.
  • form  :nanopowder
  • color  :White to yellow
  • Specific Gravity :6.51
  • PH :9.0 (50g/l, H2O, 20℃)(slurry)
  • Water Solubility  :INSOLUBLE
  • Sensitive  :Hygroscopic
  • Merck  :14,5363
  • Stability: :Stable.
  • CAS DataBase Reference :1312-81-8(CAS DataBase Reference)
  • EWG's Food Scores :1
  • FDA UNII :4QI5EL790W
  • EPA Substance Registry System :Lanthanum oxide (La2O3) (1312-81-8)
Safety
  • Hazard Codes  :Xi
  • Risk Statements  :36/37/38-36
  • Safety Statements  :26-36-39
  • WGK Germany  :1
  • RTECS  :OE5330000
  • TSCA  :Yes
  • HS Code  :28469000
  • Toxicity :LD50 orally in Rabbit: > 9968 mg/kg
  • NFPA 704:
    0
    1 0
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordWarning
  • Hazard statements H320-H315-H319-H335
  • Precautionary statements P261-P280a-P304+P340-P305+P351+P338-P405-P501a-P264-P305+P351+P338+P337+P313
Lanthanum oxide Price More Price(39)
  • Brand: Sigma-Aldrich
  • Product number: 1.10982
  • Product name : Lanthanum(III) oxide
  • Purity: for atomic absorption spectroscopy
  • Packaging: 25 g
  • Price: $78.44
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 199923
  • Product name : Lanthanum(III) oxide
  • Purity: 99.99% trace metals basis
  • Packaging: 100g
  • Price: $165
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 1.12220
  • Product name : Lanthanum(III) oxide
  • Purity: EMPLURA?
  • Packaging: 100 g
  • Price: $234.02
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 199923
  • Product name : Lanthanum(III) oxide
  • Purity: 99.99% trace metals basis
  • Packaging: 500g
  • Price: $483
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 1.12220
  • Product name : Lanthanum(III) oxide
  • Purity: EMPLURA?
  • Packaging: 500 g
  • Price: $774.22
  • Updated: 2021/03/22
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Lanthanum oxide Chemical Properties,Usage,Production

  • Uses Lanthanum Oxide, also called Lanthana, high purity Lanthanum Oxide (99.99% to 99.999%) is applied in making special optical glasses to improves the alkali resistance of glass, and is used in La-Ce-Tb phosphors for fluorescent lamps and making special optical glasses, such as infrared-absorbing glass, as well as camera and telescope lenses, Low grade of Lanthanum Oxide is widely used in ceramics and FCC catalyst, and also as raw material for Lanthanum Metal production; Lanthanum Oxide is also used as a grain growth additive during the liquid phase sintering of Silicon Nitride and Zirconium Diboride.
  • Chemical Properties white powder
  • Physical properties White amorphous powder; density 6.51 g/cm3; melts at 2,305°C; vaporizes at 4,200°C; insoluble in water; dissolves in dilute mineral acids.
  • Uses Lanthanum oxide is used to make high-quality glass, ceramics, carbon-arc electrodes, and fluorescent lamps.
  • Preparation Lanthanum oxide can be produced by direct combustion of lanthanum in oxygen or air. The oxide also may be prepared by decomposition of an oxo salt of lanthanum, such as nitrate, sulfate, carbonate, hydroxide or oxalate.
    La(CO3)3•8H2O → La2O3 + 3CO2 + 8H2O
    2La2(C2O4)3•9H2O + 3O2 → 2La2O3 + 12CO2 + 18H2O
  • Industrial uses Lanthanum oxide (La2O3) has a melting pointof 2250°C, is soluble in acids, and very slightlysoluble in water. This oxide of a rare earth elementoccurs in monazite and bastnasite. It ismarketed as the oxide or as other salts such asthe oxalate, nitrate, or hydrate. It quicklyabsorbs water and CO2 from the atmosphere.Its chief use is as an ingredient in nonsilica,rare element optical glass with oxides of tungsten, tantalum, and thorium. Lanthanumincreases refractive index, decreases dispersion,and is also used in x-ray image intensifyingscreens that speed up x-ray exposure asmuch as two to ten times so that diagnosticdosages may be reduced by as much as 80%with fewer retakes. It is also used in bariumtitanate capacitors.
Lanthanum oxide Preparation Products And Raw materials
Raw materials
Preparation Products
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