Molecular Formula | Cl3DyH12O6 |
Molar Mass | 376.95 |
Melting Point | 718°C |
Appearance | crystal |
Color | light yellow |
Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
Stability | hygroscopic |
Physical and Chemical Properties | Appearance and Properties Yellow Crystalline Powder |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
WGK Germany | 3 |
EPA chemical information | Dysprosium trichloride hexahydrate (15059-52-6) |
Dysprosium trioxide is white or light yellow powder. The white powder used in the experiment is insoluble in water and has a melting point of 2340±10 ℃. It is almost insoluble in the molten salt system, so it is basically solid in the molten salt system. The isothermal saturation equilibrium method is adopted, and the molten salt system is carried out under the protection of closed argon. In argon atmosphere, chlorination with carbon tetrachloride, dysprosium oxide reacts with carbon tetrachloride at 700 ℃.
The traditional method for preparing dysprosium chloride hydrate is the thermal reduction of dysprosium fluoride by calcium. The purity of metal dysprosium is generally below 99.9%, the content of carbon, oxygen, and fluorine reaches 15*10-4, and the energy consumption is large. The material loss of the crucible is large, and it is difficult to obtain higher quality high-purity dysprosium. In this study, Dysprosium chloride hexahydrate was prepared by carbon tetrachloride chloride method with low energy consumption. Because the reaction is carried out at low temperature, the crucible material loss is small.
appearance and properties | yellow crystalline powder |
preparation | dysprosium trioxide is white or light yellow powder. the white powder used in the experiment is insoluble in water and has a melting point of 2340±10 ℃. it is almost insoluble in the molten salt system. therefore, it is basically kept solid in the molten salt system. the saturated isothermal equilibrium method is adopted, and the molten salt system is carried out under the protection of closed argon gas. In argon atmosphere, chlorination with carbon tetrachloride, dysprosium oxide reacts with carbon tetrachloride at 700 ℃. The preparation reaction formula of dysprosium chloride is as follows: The traditional method for preparing dysprosium chloride hydrate is calcium thermal reduction of dysprosium fluoride. The purity of metal dysprosium is generally below 99.9%, and the content of carbon, oxygen, and fluorine reaches 15*10-4. And the energy consumption is large, the crucible material loss is large, and it is difficult to obtain higher quality high-purity dysprosium. In this study, Dysprosium chloride hexahydrate was prepared by carbon tetrachloride chloride method with low energy consumption. Because the reaction is carried out at low temperature, the crucible material loss is small. |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |