Uranyl sulfate

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Uranyl sulfate
Ball-and-stick model of the uranyl cation
Ball-and-stick model of the sulfate anion
ECHA InfoCard 100.013.856 Edit this at Wikidata
Molar mass 366.09 g/mol
Density 3,28 g/cm3 @ 20 °C
27,5 g/100 mL in water at 25 °C
Related compounds
Other anions
Uranyl chloride
Uranyl nitrate
Uranyl carbonate
Related compounds
Uranium dioxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Uranyl sulfate (UO2SO4), a sulfate of uranium, is an odorless lemon-yellow sand-like solid in its pure crystalline form. This salt is prepared by reacting UO3 in H2SO4.

It has found 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.

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.[1]

Radioactivity was discovered by Henri Becquerel using potassium uranyl sulfate, K2UO2(SO4)2.


  1. ^ "Metallurgy". MQes Uranium Inc. Retrieved 2 June 2012.