Ammonium Uranium Fluoride
Title: Ammonium Uranium Fluoride
CAS Registry Number: 18433-40-4
CAS Name: Triammonium pentafluorodioxouranate
Additional Names: ammonium dioxopentafluorouranate(VI); uranium ammonium fluoride; uranyl ammonium fluoride
Molecular Formula: F5H12N3O2U
Molecular Weight: 419.14
Percent Composition: F 22.66%, H 2.89%, N 10.03%, O 7.63%, U 56.79%
Line Formula: UO2(NH4)3F5
Literature References: Usually contains some water of crystallization. Prepn and crystal structure: Nguyen-Quy-Dao, Bull. Soc. Chim. Fr. 1968, 3543; idem, Acta Crystallogr. 25B, 67 (1969).
Properties: Greenish-yellow, monoclinic, cryst powder. Freely sol in water; practically insol in alcohol.
Use: Has been used in x-ray work because of its fluorescence under these rays.

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