Title: Uranium Tetrafluoride
CAS Registry Number: 10049-14-6
Molecular Formula: F4U
Molecular Weight: 314.02
Percent Composition: F 24.20%, U 75.80%
Line Formula: UF4
Literature References: Prepd from uranyl oxide and dichlorodifluoromethane: Booth et al., J. Am. Chem. Soc. 68, 1969 (1946); also prepd by the action of hydrogen fluoride on uranium dioxide or by addition of hydrofluoric acid to a U(IV) soln: Emeléus in Fluorine Chemistry vol. I, J. H. Simons, Ed. (Academic Press, New York, 1950) p 59.
Properties: Monoclinic green crystals, mp >1100°. Changes to U3O8 when heated in air. Insol in water. Sol in concd acids and alkalies with decompn.
Melting point: mp >1100°
Derivative Type: Hemipentahydrate
Properties: Orthorhombic green crystals, insol in water.
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