Rubidium carbonate

Rubidium carbonate, Rb2CO3, is a convenient compound of rubidium; it is stable, not particularly reactive, and readily soluble in water, and is the form in which rubidium is usually sold.

Rubidium carbonate
Names
IUPAC name
Rubidium carbonate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.666
RTECS number
  • FG0650000
  • InChI=1S/CH2O3.2Rb/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2 checkY
    Key: WPFGFHJALYCVMO-UHFFFAOYSA-L checkY
  • InChI=1/CH2O3.2Rb/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
    Key: WPFGFHJALYCVMO-NUQVWONBAM
  • [Rb+].[Rb+].[O-]C([O-])=O
Properties
Rb2CO3
Molar mass 230.945 g/mol
Appearance White powder,
very hygroscopic
Melting point 837 °C (1,539 °F; 1,110 K)[1]
Boiling point 900 °C (1,650 °F; 1,170 K) (decomposes)
Very soluble
−75.4·10−6 cm3/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant
Flash point Non-flammable
Related compounds
Other cations
 Lithium carbonate
Sodium carbonate
Potassium carbonate
Caesium carbonate
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

Preparation

This salt can be prepared by adding ammonium carbonate to rubidium hydroxide.[2]

Uses

It is used in some kinds of glass-making by enhancing stability and durability as well as reducing its conductivity. It is also used as a part of a catalyst for preparing short-chain alcohols from feed gas.[3]

References
  1. Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8
  2. Chisholm, Hugh, ed. (1911). "Rubidium" . Encyclopædia Britannica. Vol. 23 (11th ed.). Cambridge University Press. p. 809.
  3. Canada Patents


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