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Praseodymium

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Identification
Molecular formula

Pr

CAS number
7440-10-0
IUPAC name
praseodymium
State
State

Praseodymium is a solid at room temperature.

Melting point (Celsius)
931.00
Melting point (Kelvin)
1 204.00
Boiling point (Celsius)
3 290.00
Boiling point (Kelvin)
3 563.00
General information
Molecular weight
140.91g/mol
Molar mass
140.9070g/mol
Density
6.7700g/cm3
Appearence

Praseodymium is a soft, malleable, and silvery-white metal. It is ductile and can be slowly tarnished when exposed to air, forming a green oxide coating. This layer of oxide protects the metal from further corrosion, but it takes on a greenish hue.

Comment on solubility

Solubility of Praseodymium Compounds

Praseodymium, a member of the lanthanide series, typically forms a variety of compounds that exhibit varying solubility properties. The solubility of praseodymium compounds often depends on the specific anion or ligand present. Here are some key points regarding their solubility:

  • Soluble Compounds: Many praseodymium salts, such as praseodymium nitrate (Pr(NO3)3), tend to be soluble in water. This is largely due to the ionic nature of these compounds, which allows them to dissociate effectively in aqueous solutions.
  • Insoluble Compounds: In contrast, praseodymium phosphate (PrPO4) and praseodymium oxide (Pr2O3) are examples of compounds that are generally considered insoluble in water. Their lower solubility can be attributed to the strong ionic bonds and crystal lattice structures.
  • Solubility Variations: The solubility of praseodymium compounds may also be affected by factors such as temperature and the presence of complexing agents. For instance, the addition of certain organic solvents or ligands can enhance solubility.

To summarize, the solubility of praseodymium compounds can be quite diverse:

  1. Conductivity of aqueous solutions is a defining feature of soluble salts.
  2. The nature of the anion significantly influences solubility behavior.
  3. Environmental conditions like temperature play a role in solubility dynamics.

In considerations of praseodymium's chemical behavior, it's essential to assess the specific compound in question to accurately predict its solubility properties.

Interesting facts

Interesting Facts About Praseodymium

Praseodymium, denoted as Pr on the periodic table, is a fascinating element known for its unique properties and applications. Here are some intriguing highlights:

  • Discovery: Praseodymium was discovered in 1885 by the Austrian chemist Karl Auer von Welsbach. It was identified through its bright yellow oxide, which set it apart from other lanthanides.
  • Position in the Periodic Table: As a member of the lanthanide series, praseodymium is primarily used in alloys and various industrial processes due to its high magnetic susceptibility.
  • Applications: This element has several noteworthy applications, including:
    • In neodymium magnets, praseodymium enhances magnetic strength and stability.
    • Used in ceramics and glass manufacturing, it imparts a distinctive green color and improves the material's durability.
    • Essential in high-temperature superconductors and as a dopant in certain types of lasers.
  • Characteristics: Praseodymium is known for its:
    • High electrical conductivity, which makes it useful in electrical applications.
    • Relatively high melting point, allowing it to maintain integrity in extreme conditions.
  • Unique Name: The name 'praseodymium' is derived from the Greek words ‘prasios’ (green) and ‘demos’ (people), referring to its green salts.
  • Isotopes: Praseodymium has several isotopes, with 141Pr being the most stable and abundant, showcasing its significance in nuclear research.

In summary, praseodymium is not just another rare earth element; it plays a critical role in modern technology and materials science. As we continue to explore its properties and potential applications, the importance of Pr in various fields is likely to grow.

Synonyms
PRASEODYMIUM
7440-10-0
UNII-NKN7EZA750
NKN7EZA750
EINECS 231-120-3
PRASEODYMIUM, ELEMENTAL
DTXSID4064684
Praseodymium Metallicum
DTXCID2047648
231-120-3
Pr
Praseodymium ingot
MFCD00011174
Sulfur-Free Praseodymium Concentrate: Pr @ approx. 3 wt% in Hydrocarbons
praseodimio
praseodyme
Praseodymium Standard: Pr @ 1000 microg/mL in 5% HNO3
Praseodymium Standard: Pr @ 10000 microg/mL in 5% HNO3
Praseodym
praseodymium atom
Praseodymium chips
Praseodymium powder
PRASEODYMIUM [MI]
59Pr
CHEBI:49828
AKOS024257640
Praseodymium rod, 12.7mm (0.5in) dia
NS00082259
Q1386
Praseodymium foil, 0.62mm (0.024in) thick
Praseodymium - Pr @ 1000 microg/mL in 5% HNO3
Praseodymium, rod, 50mm, diameter 6.35mm, cast, 99%
Praseodymium, rod, 100mm, diameter 6.35mm, cast, 99%
Praseodymium, foil, 25x25mm, thickness 0.25mm, as rolled, 99%
Praseodymium, foil, 50x50mm, thickness 0.25mm, as rolled, 99%
Praseodymium, rod, 10.0 mm diameter, length 25 mm, purity 99%
Praseodymium, rod, 10.0 mm diameter, length 50 mm, purity 99%
Praseodymium, wire reel, 100mm, diameter 1.0mm, hard, 99.9%
Praseodymium, wire reel, 200mm, diameter 1.0mm, hard, 99.9%
Praseodymium, foil, thickness 0.50 mm, size 25 x 25 mm, purity 99%
Praseodymium, foil, thickness 0.50 mm, size 50 x 50 mm, purity 99%
Praseodymium, foil, thickness 1.0 mm, purity 99%, size 50 x 50 mm
Praseodymium, foil, thickness 1.0 mm, size 25 x 25 mm, purity 99%
Praseodymium, lump, 25 mm max. lump size, weight 100 g, purity 99%
Praseodymium, lump, 25 mm max. lump size, weight 200 g, purity 99%
Praseodymium, lump, 25 mm max. lump size, weight 300 g, purity 99%
Praseodymium, foil, not light tested, 25x25mm, thickness 0.005mm, as rolled, 99%
Praseodymium, foil, not light tested, 25x25mm, thickness 0.015mm, as rolled, 99%
Praseodymium, foil, not light tested, 25x25mm, thickness 0.01mm, as rolled, 99%
Praseodymium, foil, not light tested, 25x25mm, thickness 0.025mm, as rolled, 99%
Praseodymium, foil, not light tested, 50x50mm, thickness 0.005mm, as rolled, 99%
Praseodymium, foil, not light tested, 50x50mm, thickness 0.015mm, as rolled, 99%
Praseodymium, foil, not light tested, 50x50mm, thickness 0.01mm, as rolled, 99%
Praseodymium, powder, max. particle size 250 micron, weight 10 g, purity 99.9%
Praseodymium, powder, max. particle size 250 micron, weight 20 g, purity 99.9%
Praseodymium, powder, max. particle size 250 micron, weight 50 g, purity 99.9%