| Identification | Back Directory | [Name]
Uranium(III) chloride. | [CAS]
10025-93-1 | [Synonyms]
URANIUMTRICHLORIDE
Uran(III) trichloride
Uranium(III) chloride. | [Molecular Formula]
Cl3U | [MOL File]
10025-93-1.mol | [Molecular Weight]
344.39 |
| Chemical Properties | Back Directory | [Melting point ]
842° | [density ]
5.51 | [solubility ]
very soluble in H2O; insoluble in benzene, ctc | [form ]
green hygroscopic crystals | [color ]
green hygroscopic crystals, crystalline | [Water Solubility ]
very soluble H2O, evolves H2, solution changes color from purple to green due to oxidation of U+++ [MER06] | [Specific Heat Capacity]
Cp(crystal):0.297628J/(g·K),at 25℃ | [EPA Substance Registry System]
Uranium chloride (UCl3) (10025-93-1) |
| Hazard Information | Back Directory | [Chemical Properties]
dark purple crystal(s); somewhat hygroscopic; obtained by reacting UH3 with HCl at 250°C–300°C; used in molten salt electrolytes to refine uranium metal [KIR83] [MER06] | [Synthesis]
Completely pure UCl4 is reduced with H2 in the same tube in which it is prepared. The reduction proceeds below red heat and then at dull-red heat, until the off-gases are free of HCl. Absolutely pure H2 must be used. The dull-brown, very hygroscopic UCl3 adheres strongly to glass. Thus, when the mechanically separated product is dissolved, some brown to brick-red U (IV) silicate is always obtained as a residue. |
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