Хлорид урана(III)
- английское имяUranium(III) chloride.
- CAS №10025-93-1
- CBNumberCB21253205
- ФормулаCl3U
- мольный вес344.39
- файл Mol10025-93-1.mol
химическое свойство
| Температура плавления | 842° |
| плотность | 5.51 |
| растворимость | very soluble in H2O; insoluble in benzene, ctc |
| форма | green hygroscopic crystals |
| цвет | green hygroscopic crystals, crystalline |
| Растворимость в воде | very soluble H2O, evolves H2, solution changes color from purple to green due to oxidation of U+++ [MER06] |
| FDA UNII | 1SW3X68G1K |
| Система регистрации веществ EPA | Uranium chloride (UCl3) (10025-93-1) |
Хлорид урана(III) химические свойства, назначение, производство
Химические свойства
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]Синтез
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.