Radium chloride

Structural formula
General
Surname	Radium chloride
Molecular formula	RaCl 2
Brief description	white solid
External identifiers / databases
EC number	233-035-7
ECHA InfoCard	100.030.020
Wikidata	Q1344375
properties
Molar mass	296.93 g mol −1
Physical state	firmly
density	4.9 g cm −3
Melting point	900 ° C
solubility	Easily soluble in water (245 g l −1 at 20 ° C); soluble in ethanol;
Hazard and safety information
	; Radioactive
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Radium chloride is a white solid that glows by itself in the dark . In the course of time, radium chloride turns yellowish due to radiolysis .

Extraction and presentation

Marie Curie obtained the first sample of the element in the form of chloride from pitchblende . Anhydrous radium chloride is produced by dehydrating the sulfate at 300 ° C and then reacting it with gaseous hydrogen chloride in a red heat in a quartz tube.

properties

Radium chloride is weakly paramagnetic and has a magnetic susceptibility of +1.05 · 10 ⁶ . Radium chloride crystallizes out as a dihydrate from aqueous solution, which is isomorphic with barium chloride BaCl ₂ · 2H ₂ O. The freshly crystallized salt is colorless, but turns yellow over time through radiolysis through alpha radiation .

use

The chloride of the nuclide ²²³ Ra is used under the brand name Xofigo® for bone metastasis therapy in prostate cancer . The chloride of the nuclide ²²⁴ Ra is used in the treatment of ankylosing spondylitis for use

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g Kirby, HW and Salutsky, Murrell L. (1964) The Radiochemistry of Radium , Subcommittee on Radiochemistry, National Academy of Sciences, accessed February 28, 2017.
^ ^A ^b William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 100 ( limited preview in Google Book search).
↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.
↑ Therapy information from the University Hospital Erlangen , accessed on February 28, 2017.
↑ Therapy information from the German Bechterew Morbus Association, accessed on February 28, 2017.

[Kirby-1] ↑ ^a ^b ^c ^d ^e ^f ^g Kirby, HW and Salutsky, Murrell L. (1964) The Radiochemistry of Radium , Subcommittee on Radiochemistry, National Academy of Sciences, accessed February 28, 2017.

[William_M._Haynes-2] A ^b William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 100 ( limited preview in Google Book search).

[NV-3] The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.

[4] Therapy information from the University Hospital Erlangen , accessed on February 28, 2017.

[5] Therapy information from the German Bechterew Morbus Association, accessed on February 28, 2017.