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Uranium hexafluoride

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Identification
Molecular formula
UF6
CAS number
7783-81-5
IUPAC name
hexafluorouranium
State
State

At room temperature, uranium hexafluoride is typically a solid but sublimes to a gaseous state under slightly elevated temperatures or reduced pressures. It transitions to a gas at temperatures above its sublimation point.

Melting point (Celsius)
64.10
Melting point (Kelvin)
337.25
Boiling point (Celsius)
56.25
Boiling point (Kelvin)
329.40
General information
Molecular weight
352.02g/mol
Molar mass
352.0190g/mol
Density
5.0900g/cm3
Appearence

Uranium hexafluoride is a white crystalline solid or colorless liquid. It is highly volatile and sublimates at room temperature. In moist air, it releases a mist of corrosive hydrogen fluoride gas, resulting in a fuming appearance.

Comment on solubility

Solubility of Hexafluorouranium

Hexafluorouranium, represented by the formula UF6, exhibits interesting properties concerning its solubility. As a compound containing uranium, it is primarily regarded for its unique behavior in various solvents. The solubility of UF6 can vary based on the conditions and mediums used. Notably:

  • Solvent Interaction: Hexafluorouranium is generally more soluble in nonpolar solvents compared to polar ones due to its molecular structure.
  • Temperature Influence: Increased temperatures can enhance its solubility as the kinetic energy of molecules in the solvent rises.
  • Pressure Effects: Under higher pressures, the solubility may also increase, making supercritical fluids an interesting area of study.

It’s important to note that while UF6 can dissolve to some extent in certain hydrocarbons, its overall aqueous solubility is very low, which can limit its usability in water-based reactions. Understanding its solubility characteristics is crucial for applications in nuclear chemistry and material science.

In summary, the solubility behavior of hexafluorouranium is influenced by a variety of factors, which together paint a complex picture of its interactions with different solvents.

Interesting facts

Interesting Facts about Hexafluorouranium

Hexafluorouranium is a fascinating compound within the realm of chemistry, particularly noted for its applications in nuclear science and materials. Here are some key points that highlight its significance:

  • Composition: This compound consists of uranium and fluorine, making it part of a broader category of uranium compounds.
  • Usage in Nuclear Fuels: Hexafluorouranium plays a significant role in the nuclear fuel cycle. It is often utilized in the production of uranium hexafluoride (UF6), which is essential for the enrichment process of uranium isotopes.
  • Hexafluoride Properties: The unique properties of hexafluorouranium facilitate its gaseous form at higher temperatures, which is crucial for its manipulation during the enrichment process.
  • Safety & Handling: As a hazardous material, hexafluorouranium requires careful handling and strict safety measures to mitigate risks associated with radioactive exposure and chemical reactivity.
  • Chemistry Insights: Studying hexafluorouranium gives scientists insight into complex chemical behaviors due to the presence of highly electronegative fluorine atoms, which influence the compound's reactivity and stability.

In the words of a chemist: "Understanding compounds like hexafluorouranium not only advances our knowledge but also ensures a safer engagement with nuclear materials." As part of the nuclear chemistry field, this compound remains a subject of continuous research and innovation.

Synonyms
URANIUM HEXAFLUORIDE
Hexafluorouranium
Uranium fluoride
Uranium fluoride (UF6)
7783-81-5
Uranium fluoride (UF6), (OC-6-11)-
11133-71-4
Uranhexafluorid
HSDB 4501
hexafluoridouranium
EINECS 232-028-6
uranium(6+) fluoride
Uranium-238 hexafluoride
Uranium fluoride (U2F9)
UNII-N06GJ1D94J
12134-48-4
Uranium fluoride (238UF6)
DTXSID4074566
CHEBI:30235
[UF6]
UN 2977
UN 2978
Q408887
Uranium hexafluoride, fissile excepted or non-fissile
Uranium hexafluoride, fissile (with more than 1% U-2335) [UN2977] [Radioactive]
Uranium hexafluoride, fissile excepted or non-fissile [UN2978] [Radioactive]