Rubidium hydroxide

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

Names
IUPAC name Rubidium hydroxide
Identifiers
CAS Number	1310-82-3 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:32108 Y
ChemSpider	56181 Y
ECHA InfoCard	100.013.806
PubChem CID	62393
RTECS number	VL8750000
UNII	2692362HBM Y
CompTox Dashboard (EPA)	DTXSID1061655
InChI InChI=1S/H2O.Rb/h1H2;/q;+1/p-1 Y Key: CPRMKOQKXYSDML-UHFFFAOYSA-M Y InChI=1/H2O.Rb/h1H2;/q;+1/p-1 Key: CPRMKOQKXYSDML-REWHXWOFAO
SMILES [Rb+].[OH-]
Properties
Chemical formula	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)
Solubility in water	173 g/100 mL (30 °C)
Solubility	soluble in ethanol
Acidity (pKa)	15.4[1]
Thermochemistry
Std enthalpy of formation (ΔfH⦵298)	−413.8 kJ/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Corrosive
GHS labelling:
Pictograms
NFPA 704 (fire diamond)	3 0 1 ALK
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). N verify (what is YN ?) Infobox references

Uses

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]