Radium chloride

Radium chloride
Radium Chloride
Identifiers
3D model ( JSmol)
ChemSpider
ECHA InfoCard 100.030.020
UNII
Properties
RaCl2
Molar mass 296.094 g/mol
Appearance Colorless solid [1]
Density 4.9 g/cm3 [1]
Melting point 900 °C (1,650 °F; 1,170 K) [1]
245 g/L (20 °C) [2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Radium chloride (RaCl2) is a chemical compound of radium and chlorine, and the first radium compound isolated in a pure state. Marie Curie and André-Louis Debierne used it in their original separation of radium from barium. [3] The first preparation of radium metal was by the electrolysis of a solution of this salt using a mercury cathode. [4]

Preparation

Radium chloride crystallises from solution as the di hydrate. It may be dehydrated by heating to 100 °C in air for one hour followed by 5 12 hours at 520 °C under argon. [5] If the presence of other anions is suspected, the dehydration may be effectuated by fusion under hydrogen chloride. [6]

Radium chloride can also be prepared by heating radium bromide in a flow of dry hydrogen chloride gas, or by dehydrating radium sulfate with dry air and then heating the sulfate in a stream of hydrogen chloride. [1]

Other Languages
azərbaycanca: Radium-xlorid
Deutsch: Radiumchlorid
한국어: 염화 라듐
Nederlands: Radiumchloride
polski: Chlorek radu
русский: Хлорид радия
српски / srpski: Radijum hlorid
srpskohrvatski / српскохрватски: Radijum hlorid
中文: 氯化镭