Chemical Property of RADIUMCARBONATE
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Chemical Property:
- Water Solubility.:insoluble H2O [HAW93]
- Purity/Quality:
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Safty Information:
- Pictogram(s):
- Hazard Codes:
- MSDS Files:
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Useful:
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Description
Radium carbonate has the molecular formula of
RaCO3 and the molecular weight of grams per mole.
Most of the compounds of radium are more insoluble
than the corresponding barium compounds and concentrate
in the precipitate upon fractional precipitation of
barium-radium mixtures. One notable exception is
radium carbonate, which is more soluble than barium
carbonate and, hence, concentrates in the soluble fraction
(filtrate) when barium–radium carbonate mixtures
are fractionally separated.
Radium carbonate is soluble in dilute acids, and more
soluble in concentrated ammonium carbonate solution
than BaCO3.
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Physical properties
Its
volubility is 2.1×10-4 g/100 ml of water at 18°C. For
this reason, precipitation as the sulfate is a common practice
for the recovery of radium, particularly with the
addition of bariumcarrier. Radium Carbonate is soluble in concentrated sulfuric
acid, but precipitates upon dilution of the acid. It is converted
to radium carbonate by fusion with sodium
carbonate (a technique frequently used for the dissolution
of radiferous barium sulfate because the resulting
barium-radium carbonates are soluble in any dilute
mineral acid).
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Uses
The principal use of radium carbonate has been in
medicine and to prepare other radium compounds.
