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Rubidium hydroxide - Wikipedia

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Rubidium hydroxide
Names
IUPAC name

Rubidium hydroxide

Identifiers

3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.013.806 Edit this at Wikidata
RTECS number
  • VL8750000
UNII

  • InChI=1S/H2O.Rb/h1H2;/q;+1/p-1 check

    Key: CPRMKOQKXYSDML-UHFFFAOYSA-M check

  • InChI=1/H2O.Rb/h1H2;/q;+1/p-1

    Key: CPRMKOQKXYSDML-REWHXWOFAO

  • [Rb+].[OH-]

Properties
RbOH
Molar mass 102.475 g·mol−1
Appearance white solid,
hygroscopic
Density 3.1 g/mL at 25 °C
Melting point 382 °C (720 °F; 655 K) dec
Boiling point 1,390 °C (2,530 °F; 1,660 K)
173 g/100 mL (30 °C)
Solubility soluble in ethanol
Acidity (pKa) 15.4[1]
Thermochemistry
−413.8 kJ/mol
Hazards
Occupational safety and health (OHS/OSH):

Main hazards

 Corrosive
GHS labelling:
GHS05: Corrosive
NFPA 704 (fire diamond)
Flash point Non-flammable
Related compounds

Other cations

 Lithium hydroxide
Sodium hydroxide
Potassium hydroxide
Cesium hydroxide

Related compounds

 Rubidium oxide (+1)

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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Rubidium hydroxide is the inorganic compound with the formula RbOH. It consists of rubidium cations and an equal number of hydroxide anions. It is a colorless solid that is commercially available as aqueous solutions from a few suppliers. Like other strong bases, rubidium hydroxide is highly caustic. Rubidium hydroxide is formed when rubidium metal reacts with water.[2]

Rubidium hydroxide is rarely used in industrial processes because potassium hydroxide and sodium hydroxide can perform nearly all the same functions of rubidium hydroxide. Metal oxide catalysts are sometimes modified with rubidium hydroxide.[2]

  1. ^ "Sortierte Liste: pKb-Werte, nach Ordnungszahl sortiert. - Das Periodensystem online" (in German).
  2. ^ a b Lenk, Winfried; Prinz, Horst; Steinmetz, Anja (2010). "Rubidium and Rubidium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a23_473.pub2. ISBN 978-3-527-30673-2.