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TABLE 1 Physical Properties of Pertinent Uranium Compounds

Table 1 - Physical Properties of Pertinent Uranium Compounds




Density (g/cm3)

Compound Melting Point (°C) Crystal/ Particle Bulkb Solubility in Water at Ambient Temperature

UF6 64.1

4.68

4.6

Decomposes to UO2F2

UF4 960 ± 5

6.7

2.0 – 4.5

Very slightly soluble

UO2F2 Decomposes to U3O8 at 300

6.37

~2.6

Soluble

U3O8 Decomposes to UO2 at 1,300

8.30

1.5 – 4.0

Insoluble

UO2 2,878 ± 20

10.96

2.0 – 5.0

Insoluble

Uranium metal 1,132

19.05

19

Insoluble


a Source: DOE (1999), Katz and Rabinowitch (1951), Kirk-Othmer (1997).

b Bulk densities of UF4, U3O8, and UO2 are highly variable, depending on the production process and the properties of the starting uranium compounds.

Notation: UF4 = uranium tetrafluoride; UF6 = uranium hexafluoride; UO2 = uranium dioxide; UO2F2 = uranyl fluoride; U3O8 = triuranium octaoxide.





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