Europium

Base Information

• Chemical Name: Europium
• CAS No.: 7440-53-1
• Deprecated CAS: 110123-53-0,801316-14-3,801316-14-3
• Molecular Formula: Eu
• Molecular Weight: 151.96
• Hs Code.: 28053090
• European Community (EC) Number: 231-161-7
• UNII: 444W947O8O
• DSSTox Substance ID: DTXSID3064695
• Nikkaji Number: J95.198F
• Wikipedia: Europium
• Wikidata: Q1396
• Mol file: 7440-53-1.mol

Synonyms:Europium

Chemical Property of Europium

Chemical Property:

• Appearance/Colour: grey ingots
• Melting Point: 822 °C(lit.)
• Boiling Point: 1527 °C(lit.)
• PSA: 0.00000
• Density: 5.24 g/mL at 25 °C(lit.)
• LogP: 0.00000
• Sensitive.: Air & Moisture Sensitive
• Water Solubility.: Reacts with water.
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 152.92124
• Heavy Atom Count: 1
• Complexity: 0

Purity/Quality:

99% ^*data from raw suppliers

Europium pieces, sublimed dendritic 99.9% (REO) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: F,C
• Statements: 14/15-17-34
• Safety Statements: 43-7/8-45-36/37/39-27-26-23

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Rare Earth Metals
• Canonical SMILES: [Eu]
• Uses: Europium, named after the continent of Europe, is mainly used for its phosphorescence. Excitation of the Europium atom by absorption of ultra violet radiation can result in specific energy level transitions within the atom creating an emission of visible radiation. It is a dopant in some types of glass in lasers and other optoelectronic devices. Europium Oxide (Eu2O3) is widely used as a red phosphor in television sets and fluorescent lamps, and as an activator for Yttrium-based phosphors. In energy efficient fluorescent lighting, Europium provides not only the necessary red, but also the blue. Several commercial blue phosphors are based on Europium for color TV, computer screens and fluorescent lamps. Its luminescence is also valuable in medical, surgical and biochemical applications. Europium is used for the capture of thermal neutrons for nuclear control rods in atomic power stations. Thermal neutron absorption of the natural mixture of europium isotopes is 4,600 barns. While its salts are used in coatings for cathode ray tubes in color televisions, organoderivatives are used in NMR spectroscopy. Neutron absorber in nuclear control, color-TV phosphors to activate yttrium, phosphors in postagestamp glues to permit electronic recognition of firstclass mail. There are only a few commercial uses for europium. Europium oxide, (Eu2O3), a compoundof europium, is added to infra-sensitive phosphors to enhance the red colors on TVand computer-monitor picture tubes. It is also added to fluorescent light tubes to increasetheir efficiency, as well as to some materials to make lasers. Since it is a good neutron absorber,it is part of nuclear reactor control rods. Europium is an additive to the glue used on postagestamps, thus making it possible for the electronic sorting machines in U.S. postal offices to“read” the stamps.
• Physical properties: Europium is one of the most rare of the rare-earths. Its abundance on Earth is only 1.1ppm. It is a soft, shiny, steel-gray metal that is quite ductile and malleable, which means it canbe worked and formed into many shapes. It looks like and feels like the element lead (Pb), butis somewhat heavier. It is the most chemically active of all the rare-earths.Europium’s melting point is 822°C, its boiling point is 1,529°C, and its density is 5.243g/cm3.

Refernces

Triamidotriazacyclononane complexes of group 3 metals. Synthesis and crystal structures

10.1021/ic034090v

The research focuses on the synthesis and characterization of a series of group 3 metal complexes using the hexadentate ligand (SiMe2NPh)3-tacn)3-. The purpose of the study was to explore the coordination chemistry of these metals with macrocyclic ligands, which have potential applications in nuclear magnetic resonance imaging, luminescent probes, diagnostic imaging, catalysis, and lanthanide separation. The researchers synthesized complexes of yttrium, europium, ytterbium, and uranium with the ligand, and found that these complexes displayed trigonal prismatic structures with the six nitrogen atoms of the ligand defining parallel planes. The larger ionic radius of lanthanum allowed for the coordination of a THF ligand, while the uranium(IV) halides formed seven-coordinate molecular complexes with a bicapped trigonal bipyramidal geometry.