Rubidium Hydroxide

Title: Rubidium Hydroxide
CAS Registry Number: 1310-82-3
Molecular Formula: HORb
Molecular Weight: 102.48
Percent Composition: H 0.98%, O 15.61%, Rb 83.40%
Line Formula: RbOH
Literature References: Book: L. S. Itkina, Lithium, Rubidium and Cesium Hydroxide (Nauka, Moscow, USSR, 1973) 136 pp. Toxicological study: G. T. Johnson et al., Toxicol. Appl. Pharmacol. 32, 239 (1975).
Properties: Grayish-white, deliquesc mass. d 3.203. Melts at red heat. Sol in 0.6 part water; sol in alcohol. It is a stronger base than potassium hydroxide. Keep well closed.
Density: d 3.203
Use: Catalyst in oxidative chlorination.
Rubidium Iodide Rubijervine Rubixanthin Ruboxistaurin Rubus

Rubidium hydroxide
CAS number 1310-82-3 YesY
PubChem 62393
ChemSpider 56181 YesY
ChEBI CHEBI:32108 YesY
RTECS number VL8750000
Jmol-3D images Image 1
Molar mass 102.475 g/mol
Appearance grayish-white solid,
Density 3.203 g/cm3
Melting point 301 °C
Boiling point 1390 °C
Solubility in water 100 g/100 mL (15 °C)
Solubility soluble in ethanol
Std enthalpy of
formation ΔfHo298
−413.8 kJ/mol
EU Index Not listed
Main hazards Corrosive
NFPA 704
NFPA 704.svg
Flash point Non-flammable
Related compounds
Other cations Lithium hydroxide
Sodium hydroxide
Potassium hydroxide
Caesium hydroxide
Related compounds Rubidium oxide
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Rubidium hydroxide (RbOH) is a strong basic chemical and alkali that is formed by one rubidium ion and one hydroxide ion.

Rubidium hydroxide does not appear in nature. However it can be obtained by synthesis from rubidium oxide. In addition, rubidium hydroxide is commercially available in form of an aqueous solution from a few suppliers.

Rubidium hydroxide is highly corrosive, therefore suitable protective clothing, gloves and eye-face protection are required when handling this material.