Uranium Tetrachloride
Title: Uranium Tetrachloride
CAS Registry Number: 10026-10-5
Molecular Formula: Cl4U
Molecular Weight: 379.84
Percent Composition: Cl 37.33%, U 62.67%
Line Formula: UCl4
Literature References: Prepd from uranium(VI) oxide dihydrate and hexachloropropene: Hermann, Suttle, Inorg. Synth. 5, 143 (1957).
Properties: Dark green octahedral crystals (tetragonal symmetry). Oxidizes in air and dec on contact with water. Should be stored in sealed ampuls. d425 4.725. mp 590°, bp760 791°. Heat of formation (solid) 250.9 kcal/mol at 0°. Freely sol in water (dec). Also sol in polar organic solvents. Insol in nonpolar solvents such as hydrocarbons and ethyl ether.
Melting point: mp 590°
Boiling point: bp760 791°
Density: d425 4.725

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