Uranyl sulfate
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| UN number | 2909 |
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| Template:Longitem | UO2SO4 |
| Molar mass | 366.09 g/mol |
| Density | 3.28 g/cm3 @ 20 °C |
| Template:Longitem | Uranyl chloride Uranyl nitrate Uranyl carbonate |
| Template:Longitem | Uranium dioxide |
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Uranyl sulfate describes a family of inorganic compounds with the formula UO2SO4(H2O)n. These salts consist of sulfate, the uranyl ion, and water. They are lemon-yellow solids. Uranyl sulfates are intermediates in some extraction methods used for uranium ores.[1] These compounds can also take the form of an anhydrous salt.
Structure
The structure of UO2(SO4)(H2O)3.5 is illustrative of the uranyl sulfates. The trans-UO22+ centers are encased in a pentagonal bipyramidal coordination sphere. In the pentagonal plane are five oxygen ligands derived from sulfate and aquo ligands. The compound is a coordination polymer.[2]
Uses
Aside from the large scale use in mining, uranyl sulfate finds some use as a negative stain in microscopy and tracer in biology. The Aqueous Homogeneous Reactor experiment, constructed in 1951, circulated a fuel composed of 565 grams of U-235 enriched to 14.7% in the form of uranyl sulfate.Script error: No such module "Unsubst".
The acid process of milling uranium ores involves precipitating uranyl sulfate from the pregnant leaching solution to produce the semi-refined product referred to as yellowcake.[3]
Related compounds
- the hydrogensulfate.[4]
- potassium uranyl sulfate, K2UO2(SO4)2, is a double salt used by Henri Becquerel in his discovery of radioactivity.Script error: No such module "Unsubst".
References
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