# Solubility curve for uranium hexafluoride (in any solvent)

I am doing a project and need a solubility curve or at least solubility data for uranium hexafluoride in any substance. It is impossible for water because $\ce{UF6}$ reacts violently with $\ce{H2O}$.

Is there any resource I could use for free to find this information?

• You can use mhchem ($\ce{H2O}$) to write chemical formulas, it will save you a few keystrokes and it looks neat. – Berry Holmes May 23 '17 at 3:37
• Ok. Thanks, I usually go on math SE or physics SE so I am not used to chem SE format. – mtheorylord May 23 '17 at 3:39
• No worries, this is a short help article for formatting on Chem.SE: chemistry.meta.stackexchange.com/questions/86/… – Berry Holmes May 23 '17 at 3:42
• "normal MathJax" still works too, but the extra \ce turns on the chemistry-specific stuff – uhoh May 23 '17 at 3:55
• I don't have the time to look through it, but did you already try DOI: 10.2172/4025868. Have you tried other databases yet? Please add them to avoid doubling the effort. – Martin - マーチン May 23 '17 at 5:39

So far I have found that it is soluble in:

I think the resource given by Martin (2) is the best. Resource 1 gives a solubility curve, but resource 3 doesn't. However, I think there may be data floating around on compounds mentioned by 3.

Wikipedia states that reacts violently with water* but is soluble in chloroform($\ce{CCl4}$), liquid chlorine/bromine and dissolves in nitrobenzene.

This paper discuss solubility of uranium hexafluoride in some low temperature solvents.

Solubility of $\ce{UF6}$ has been studied in liquefied gases like phosgene, nitrous dioxide and sulfur dioxide below 273K. The solubilities were compared using real and ideal gas theory and found out that phosgene provide better solubility than sulfur dioxide. Solubility of $\ce{UF6}$ has also been studied on halocarbons and fluorinated halocarbons** all below 273K.

** Perfluoroether is widely used as a solvent for $\ce{UF6}$. There are many papers which discuss this topic and can be found on Google. The following is an abstract of one of the papers.

The polyperfluoroethers are compatible with uranium hexafluoride ($\ce{UF6}$) and are suitable for use in diffusion pumps and in mechanical vacuum pumps which rely on oil as both the lubricant and the seal. The $\ce{UF6}$ is soluble in all fluids with which it is compatible. Because a number of vacuum pumps in the BOP facilities of the GCEP plant employ these perfluoroether oils as the working fluid and have oil chambers which are large, questions have been raised as to the relationships governing the solubility of $\ce{UF6}$ in these materials and the maximum quantities of $\ce{UF6}$ which could be dissolved in these oils under credible accident conditions. This report summarizes these solubility relations and the interaction of the $\ce{UF6}$ solubility and the pumping capability of this type of vacuum pump. It will be shown that, whereas the solubility of $\ce{UF6}$ in Fomblin Y25 fluoroether fluid under a $\ce{UF6}$ pressure of 760 torr and at the pump operating temperature of 1600F is about 500 g of $\ce{UF6}$ per liter of oil, the system controls are such as to isolate the system from the pumps before the quantity of $\ce{UF6}$ dissolved in the perfluoroether exceeds about 10 g of $\ce{UF6}$ per liter of oil.

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