9863. Uranyl Nitrate

Nomenclature

CAS number: 36478-76-9
(OC-6-11)-Bis(nitrato-κO,κO′)dioxouranium.
N2O8U; mol wt 394.04.
N 7.11%, O 32.48%, U 60.41%.
UO2(NO3)2.

Derivative

Hexahydrate.

Nomenclature

CAS number: 13520-83-7
N2O8U.6H2O; mol wt 502.13.
N 5.58%, O 44.61%, U 47.40%, H 2.41%.

Properties

Yellow crystals; greenish luster by reflected light. When shaken, rubbed, or crushed, the crystals show remarkable triboluminescence with occasional detonations. d 2.807; mp 60°. Soly in water: 122 g/100 g. Freely sol in alcohol, ether. The aq soln is acid. Solns of uranium nitrate in ether should not be allowed to stand in sunlight as explosion may occur.

Use

As intensifier in photography; manuf uranium glaze, decorating porcelain; also as reagent in analytical chemistry for pptn of sodium and magnesium.