Оксид таллия (I)
- английское имяTHALLIUM (I) OXIDE
- CAS №1314-12-1
- CBNumberCB0287283
- ФормулаOTl2
- мольный вес424.76
- EINECS215-220-4
- номер MDLMFCD00054157
- файл Mol1314-12-1.mol
химическое свойство
| Температура плавления | about 300° | ||||||||||||||
| Температура кипения | 1080℃ [HAW93] | ||||||||||||||
| плотность | 9.520 | ||||||||||||||
| растворимость | soluble in H2O, ethanol | ||||||||||||||
| форма | black rhombohedral crystals | ||||||||||||||
| цвет | black rhomb crystals, crystalline; hygroscopic | ||||||||||||||
| Растворимость в воде | soluble H2O, hydrolyzes to hydroxide; soluble alcohol [MER06] | ||||||||||||||
| Кристальная структура | Reverse CdCl2 type | ||||||||||||||
| crystal system | Three sides | ||||||||||||||
| Space group | R3m | ||||||||||||||
| Lattice constant |
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| Справочник по базе данных CAS | 1314-12-1 | ||||||||||||||
| FDA UNII | LHV2O5DWPQ | ||||||||||||||
| Система регистрации веществ EPA | Thallium oxide (Tl2O) (1314-12-1) |
Оксид таллия (I) химические свойства, назначение, производство
Физические свойства
Thallium monooxide is a black powder; orthorhombic crystals; hygroscopic; density 9.52g/cm3; melts at 596°C; vaporizes at about 1,080°C; soluble in water, alcohol and acids.Использование
In manufacture of glass of a high coefficient of refraction for optical purposes (thallium flint glass) and for artificial gems.Подготовка
Thallium oxide can be made by heating Tl metal in air or oxygen. The brown-black thallic oxide, Tl2O3 , that may also form begins to lose oxygen at about 100°C converting to thallium oxide, Tl2O.Thallium oxide also can be prepared by thermal dissociation of thallium hydroxide, TlOH or thallium carbonate, Tl2CO3 Thallium oxide dissolves in water forming thallous hydroxide, TlOH. It reacts with carbon dioxide to form thallous carbonate, Tl2CO3.
Опасность
Toxic by ingestion.