Radium chloride

Radium chloride
Radium Chloride
3D model (JSmol)
ECHA InfoCard100.030.020
Molar mass296.094 g/mol
AppearanceColorless solid[1]
Density4.9 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]


Radium chloride crystallises from solution as the dihydrate. 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
čeština: Chlorid radnatý
Deutsch: Radiumchlorid
한국어: 염화 라듐
Nederlands: Radiumchloride
polski: Chlorek radu
русский: Хлорид радия
српски / srpski: Radijum hlorid
srpskohrvatski / српскохрватски: Radijum hlorid
Tiếng Việt: Radium clorua
中文: 氯化镭