Praseodym(III,IV)oxid

Bezeichnung:Praseodym(III,IV)oxid

CAS-Nr12037-29-5

Englisch Name:Praseodymium oxide

CBNumberCB2747664

SummenformelO3Pr2

Molgewicht329.81

MOL-Datei12037-29-5.mol

Synonyma

Praseodym(III,IV)oxid

Praseodym(III,IV)oxid physikalisch-chemischer Eigenschaften

Schmelzpunkt	2500°C
Dichte	6.5 g/mL at 25 °C(lit.)
storage temp.	under inert gas (nitrogen or Argon) at 2-8°C
Aggregatzustand	nanopowder
Farbe	Dark green to dark brown or black
Wasserlöslichkeit	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 Datenbank	12037-29-5(CAS DataBase Reference)
EPA chemische Informationen	Praseodymium oxide (Pr6O11) (12037-29-5)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-37/39
WGK Germany	1
RTECS-Nr.	TU1480000
TSCA	Yes
HS Code	28469017
Toxizität	rat,LD50,oral,> 5gm/kg (5000mg/kg),Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 12, Pg. 626, 1993.

Gefahreninformationscode (GHS)

Praseodymium oxide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Beschreibung
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.
Chemische Eigenschaften
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.
Verwenden
Glass and ceramic pigment, laboratory reagent.
Verwenden
This compound is a yellow powder used to color glass and ceramics.
Verwenden
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.
Vorbereitung Methode
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
läuterung methode
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 Upstream-Materialien And Downstream Produkte

Praseodym(III,IV)oxid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

12037-29-5, Praseodymium oxide Verwandte Suche:

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