Praseodymium oxide Chemical Properties

Melting point:

2500°C

Density 

6.5 g/mL at 25 °C(lit.)

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

form 

nanopowder

color 

Dark green to dark brown or black

Water Solubility 

insoluble

InChI

InChI=1S/3O.2Pr/q3*-2;2*+3

InChIKey

MMKQUGHLEMYQSG-UHFFFAOYSA-N

SMILES

[Pr+3].[Pr+3].[O-2].[O-2].[O-2]

CAS DataBase Reference

12037-29-5(CAS DataBase Reference)

EPA Substance Registry System

Praseodymium oxide (Pr6O11) (12037-29-5)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-37/39

WGK Germany 

1

RTECS 

TU1480000

TSCA 

Yes

HS Code 

28469017

Toxicity

rat,LD50,oral,> 5gm/kg (5000mg/kg),Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 12, Pg. 626, 1993.

MSDS

• Language:English Provider:Praseodymium oxide
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Praseodymium oxide Usage And Synthesis

Description

Praseodymium Oxide, or praseodymia, is a dark brown powder that is insoluble in water and only in strong acids. Praseodymium Oxide is stable under average temperatures and pressures. Praseodymium Oxide is a rare earth oxide compound, which is a basic anhydride and can react with acids and with potent reducing agents in redox reactions. Rare earth oxide compounds contain at least one oxygen anion and one metallic cation. They are typically insoluble in aqueous solutions (water) and extremely stable, which makes them useful in ceramic structures. For this reason, Praseodymium Oxide has a wide range of applications, from producing clay bowls to advanced electronics. Praseodymium Oxide is also valuable for lightweight structural components in aerospace and electrochemical applications such as fuel cells due to its ionic conductivity.

Chemical Properties

dark green to dark brown or black powder.
Praseodymium oxide is a weak coloring oxide that melts at (1710°F)932°C. One of the lanthanide oxides, praseodymium is classified in the periodic table as a rare earth oxide. It's not used extensively in ceramics but is used in yellow stains with zirconium silicate. This oxide is slightly soluble in water and is very toxic.

Praseodymium can be obtained as an oxide but it's usually introduced into a glaze recipe in the form of a commercial stain such as Mason 6433,6405, or 6407.

Uses

Glass and ceramic pigment, laboratory reagent.

Uses

This compound is a yellow powder used to color glass and ceramics.

Uses

Used in ceramic structures. Have a wide range of applications from producing clay bowls to advanced electronics. Praseodymium oxide is also useful in light weight structural components in aerospace and electrochemical applications such as fuel cells due to its ionic conductivity. Component of didymium glass which is a colorant for welder's goggles, also as important additive of Praseodymium yellow pigments.

Application

Praseodymium oxide nanoparticle is widely used in magnetic materials. It has also applications in catalysis.

Production Methods

1. Monazite concentrates go through the alkali solution, phosphorus moving out, leaching of diluted hydrochloric acid to get the rare earth chloride solvent;
2. Next, extract with P2O4-kerosene-HCl-ReCl system to divide it into three groups, which are light, middle, and heavy rare earth;
3. Then raffinate La-Nd light rare earth is divided according to the oxalate sediment sequence, which is samarium-neodymium(Nd)-praseodymium-cerium-lanthanum;
4. oxalate sediment could produce a soluble complex and then separate and dry to get the Praseodymium oxide(Pr6O11) at 1000℃.
Chemical equation: 3Pr2(C2O4)3→Pr6O11+7CO2+11CO.

Flammability and Explosibility

Non flammable

Purification Methods

Dissolve the oxide in acid (perchloric acid), precipitate it as the oxalate and the salt is ignited at 650o to give the oxide.

Praseodymium oxide(12037-29-5)Related Product Information

• Tetraterbium heptaoxide
• Iron oxide
• Propylene oxide
• ETHYLENE OXIDE
• NITRIC OXIDE
• Magnesium oxide
• Cuprous oxide
• Zinc oxide
• Samarium oxide
• Boron oxide
• 4,4,5A-TRIMETHYLPERHYDRO-1-BENZOXIREN-2-ONE
• Nickel oxide
• Iron Oxide Black
• (Diethoxymethyl)diphenylphosphine oxide
• MANGANESE (III) OXIDE
• Europium Oxide
• COPPER CHROMITE
• Strontium oxide