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einsteinium
Einsteinium information, including Technical Data, Safety Data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity and thermal properties are included.

 

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Einsteinium is a Block F, Group 3, Period 7 element. The electronic configuration is [Rn] 5f11 7s2. In its elemental form einsteinium's CAS number is 7429-92-7 The einsteinium atom has a radius of 186.pm and it's Van der Waals radius is 200.pm.

Einsteinium was discovered by Albert Ghiorso in 1952. Named in honor of Albert Einstein.

 

 

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Einsteinium Safety Data. The safety data for einsteinium metal, nanoparticles and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the left margin.

Ionization Energy. The ionization energy for einsteinium (the least required energy to release a single electron from the atom in it's ground state in the gas phase) is stated in the following table:

1st Ionization Energy
619.44 kJ mol-1
2nd Ionization Energy
- kJ mol-1
3rd Ionization Energy
- kJ mol-1

Conductivity. As to einsteinium's electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @ 20 ºC is - µOcm and its electronegativities (or its ability to draw electrons relative to other elements) is -. The thermal conductivity of einsteinium is - W m-1 K-1.

Thermal Properties of Einsteinium. The melting point and boiling point for einsteinium are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization.

Heat of Fusion
- kJ mol-1
Heat of Vaporization
- kJ mol-1
Heat of Atomization
150 kJ mol-1



 
Formula Atomic Number Molecular Weight Electronegativity (Pauling) Density Melting Point
Boiling Point
Vanderwaals radius
Ionic radius Energy of first ionization
Es 99 (252)  g.mol -1 - - g/L 860 °C - °C .200 nm - pm 619.44 kJ.mol-1

PRODUCT CATALOG U.S. Operations Submicron & Nanopowder Tolling Ultra High Purity Sputtering Target Crystal Growth Rod, Plate, Powder, etc. Foil
 
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Recent Research & Development for Einsteinium

  •  The metabolism of plutonium and related elements. International Commission on Radiological Protection. A report of a Task Group of Committee 2. Ann ICRP. 1986;16(2-3):i-vi, 1-98. Review. No abstract available.

  • Distribution of 253Es in juvenile miniature swine. Health Phys. 1984 Sep;47(3):472-5. No abstract available.

  • Late effects of inhaled 253Es(NO3)3 in rats. Health Phys. 1979 Sep;37(3):301-9. No abstract available.

  • Maximum permissible concentration (MPC) values for spontaneously fissioning radionuclides. Health Phys. 1977 Jul;33(1):35-43. No abstract available.

  • The long-term effects of intratracheally instilled 253EsCl3 in rats. Health Phys. 1975 Aug;29(2):267-72. No abstract available.

  • A method for intratracheal instillation in the rat. Lab Anim Sci. 1975 Jun;25(3):337-40.

  • The early retention, excretion and distribution of injected einsteinium citrate in beagles. Health Phys. 1975 May;28(5):585-9. No abstract available.

  • Affinity of 253Einsteinium for tumour tissue. Nat New Biol. 1973 Nov 7;246(149):23-5. No abstract available.

  • Therapeutic removal of internally deposited transuranium elements. Health Phys. 1972 Jun;22(6):765-78. No abstract available.

  • Preliminary data on 253 Es and 249 Bk metabolism in rats. Health Phys. 1972 Jun;22(6):653-6. No abstract available.

 

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