| Identification | Back Directory | [Name]
radium chloride | [CAS]
10025-66-8 | [Synonyms]
radium chloride
Einecs 233-035-7
Radium dichloride
Radium chloride (RaCl2)(9CI) | [EINECS(EC#)]
233-035-7 | [Molecular Formula]
Cl2Ra | [MOL File]
10025-66-8.mol | [Molecular Weight]
296.906 |
| Chemical Properties | Back Directory | [Appearance]
Yellowish-white crystals becoming yel-
low or pink on standing. Radiactive. Soluble in water and alcohol.
| [Melting point ]
1000° | [density ]
4.91 | [solubility ]
soluble in ethanol | [form ]
white orthorhombic crystals | [color ]
white orthorhombic crystals, crystalline | [Water Solubility ]
soluble H2O [MER06]; soluble alcohol [HAW93] |
| Hazard Information | Back Directory | [Chemical Properties]
Yellowish-white crystals becoming yel-
low or pink on standing. Radiactive. Soluble in water and alcohol.
| [Uses]
In physical research. In radiography of metals because the penetration of gamma rays is more pronounced than that of x-rays. As source of radon. No longer used to make luminous paints. | [Hazard]
As for radium. | [Description]
Radium chloride, RaCl2, was the first radium
compound to be prepared in a pure state and was the
basis of Marie Curie’s original separation of radium
from Barium. The first preparation of radium metal
was by the electrolysis of a solution of radium chloride
using a mercury cathode. The structure remains
unknown.
Radium chloride is soluble and crystallizes from solution
as the dihydrate.
RaCl2 is used to produce radon gas that in turn is
used as a cancer treatment in medicine. This compound
is not offered for sale to the general public. | [Physical properties]
radium chloride is a white solid having a blue-green luminescence, especially when heated. It is less soluble in water than other alkaline earth chlorides, a fact which is used in the first stages of the separation of radium from barium by fractional crystallization. It is only sparingly soluble in azeotropic HCl (20.2% HCl) and virtually insoluble in concentrated hydrochloric acid.
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