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
Rubidium carbonate.jpg
IUPAC name
Rubidium carbonate
3D model (JSmol)
ECHA InfoCard 100.008.666
RTECS number
  • FG0650000
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
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


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


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]


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