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Uranium Oxide

U3O8

Back to Uranium Compounds

 

  Crystal structure of uranium (V, VI) oxide  

 

 

uranium (V, VI) oxide

Synonyms

Physical properties

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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

15.20

-2

[He].2s2.2p6

U

84.80

 

 

Synthesis

Not available

Solid state structure

 

Isotope pattern

What follows is the calculated isotope pattern for the U3O8 unit with the most intense ion set to 100%.

Formula: U3O8

mass  %
836   0.0 

837   0.0 

838   0.0 

839   2.2 _

840   0.0 

841   0.0 

842 100.0 

843   0.3 

844   1.6 

845   0.0 

846   0.0

 

 

CAS #

Formula

Formula Weight

 

U3O8

842.09

Color Crystalline Form

 Specific Gravity

Melting Point

Boiling Point

olive-grn-blk

8.30

d 1300 to UO2

 

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.

At this time Uranyl Acetate, Uranyl Nitrate and Uranium Tetra Fluoride are available in kilogram and smaller quantities to companies and institutions both nationally and internationally where the sale is permitted by law.

Should you require further information and pricing regarding Uranyl Acetate, Uranyl Nitrate, Uranium Tetra Fluoride or other fine specialty chemical compounds formulated from depleted uranium then please contact our manufacturing department by submitting the following form, or if you wish call or fax the following numbers with your request.  Fax (561) 892-8450
 

Uranium Oxide

Ingredient Name:        Uranium Oxide: U3O8               

CAS Number:              11344-57-6 

Percent:                       ca 100         

Exposure Limits:         * OSHA PEL: 0.05 mg/m3, 8‑hr TWA

  Appearance & Odor:  Uranium oxide is usually a dull, dark charcoal-gray or flat black colored                     powder (U308) with no detectable odor.

 Boiling point:  NA                                                                    Specific Gravity (H2O=l):       8.30

 Vapor Density (Air=1):  NA                                                       Vapor Pressure:                        NA                 

 Water Solubility (%):  Insoluble                                                Melting Point:        >>1300 °C

 Evaporation Rate:  NA                                                              % Volatile By Volume:        NA

Molecular Weight:  842.09

Melting point for oxides is much higher than for metal (1132 °C),

U3O8 decomposes to UO2 at 1300°C.                                     

{UO2 specific gravity = 10.96, melting point = 2878 °C.}

{UO3 specific gravity =  7.29  (melting point NA)}                

Meets ACS specifications

 

 

 

 
 
 
 
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