Uranium Oxide, di-UO2

Uranium Oxide, di-UO2
uranium (IV) oxide


 Uranium Oxide, di-UO2

  • Formula as commonly written: UO2
  • Hill system formula: O2U1
  • CAS registry number: [1344-57-6]
  • Formula weight: 270.028
  • Class: oxide


  • uranium (IV) oxide
  • uranium dioxide
  • uranium oxide
  • pitchblende

Physical properties

  • Colour: dark brown
  • Appearance: crystalline solid
  • Melting point: 2827°C
  • Boiling point:
  • Density: 10970 kg m-3


IBI Labs

Element analysis and oxidation numbers

For each compound, and where possible, a formal oxidation number for each element is given, but the usefulness of this number is limited, especially so for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only.

Element % Formal oxidation state Formal electronic configuration
O 11.85 -2 [He].2s2.2p6
U 88.15 4 [Rn].5f2


Not available

Solid state structure

  • Geometry of uranium:
  • Prototypical structure:


Isotope pattern

What follows is the calculated isotope pattern for the UO2 unit with the most intense ion set to 100%.

Formula: U1O2

mass  %266   0.0 267   0.7 268   0.0 269   0.0 270 100.0 271   0.1 272   0.4



CAS # Formula Formula Weight
1344-57-6 UO2 270.07
Color Crystalline Form Specific Gravity Melting Point Boiling Point
brn-blk, cub 10.97 2827 ……..
Solubility in 100 parts
Cold Water Hot Water Other Reagents
s HNO3


  • International Bio-Analytical Industries, Inc. is the worlds leading manufacturer of specialty Uranium compounds and has now entered into full production of Uranyl Acetate, Uranyl Nitrate, Uranium Tetra Fluoride, Uranium Oxide and other fine specialty uranium compounds and reagents manufactured exclusively from depleted uranium.
    Should you require further information and pricing regarding our fine specialty chemical compounds formulated from depleted uranium then please contact our manufacturing department by submitting the following form.


    Contact Form

    Your Name (required)

    Your Email (required)

    Your Job/Discipline

    Employer/Work Location




    Your Message

    Enter the following characters below