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Rubidium hydroxide

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Rubidium hydroxide
Names
IUPAC name Rubidium hydroxide
Identifiers
CAS Number
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.013.806 Edit this at Wikidata
PubChem CID
RTECS number
  • VL8750000
UNII
CompTox Dashboard (EPA)
InChI
  • InChI=1S/H2O.Rb/h1H2;/q;+1/p-1Key: CPRMKOQKXYSDML-UHFFFAOYSA-M
  • InChI=1/H2O.Rb/h1H2;/q;+1/p-1Key: CPRMKOQKXYSDML-REWHXWOFAO
SMILES
  • .
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
Thermochemistry
Std enthalpy of
formation (ΔfH298) 		−413.8 kJ/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards Corrosive
GHS labelling:
Pictograms GHS05: Corrosive
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazard ALK: Alkaline
3 0 1ALK
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 , 100 kPa). ☒N verify (what is  ?) Infobox references
Chemical compound

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.

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.

References

  1. "Sortierte Liste: pKb-Werte, nach Ordnungszahl sortiert. - Das Periodensystem online" (in German).
  2. ^ 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 978-3527306732.
Rubidium compounds
Hydroxides
HOH He
LiOH Be(OH)2 B(OH)3 C(OH)4 N(OH)3
[NH4]OH 		O(OH)2 FOH Ne
NaOH Mg(OH)2 Al(OH)3 Si(OH)4 P(OH)3 S(OH)2 ClOH Ar
KOH Ca(OH)2 Sc(OH)3 Ti(OH)2
Ti(OH)3
Ti(OH)4 		V(OH)2
V(OH)3 		Cr(OH)2
Cr(OH)3 		Mn(OH)2 Fe(OH)2
Fe(OH)3 		Co(OH)2 Ni(OH)2 CuOH
Cu(OH)2 		Zn(OH)2 Ga(OH)3 Ge(OH)2 As(OH)3 Se BrOH Kr
RbOH Sr(OH)2 Y(OH)3 Zr(OH)4 Nb Mo Tc(OH)4 Ru Rh(OH)3 Pd AgOH Cd(OH)2 In(OH)3 Sn(OH)2
Sn(OH)4 		Sb(OH)3 Te(OH)6 IOH Xe
CsOH Ba(OH)2 * Lu(OH)3 Hf Ta W Re Os Ir Pt Au(OH)3 Hg(OH)2 TlOH
Tl(OH)3 		Pb(OH)2
Pb(OH)4 		Bi(OH)3 Po At Rn
FrOH Ra(OH)2 ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
 
* La(OH)3 Ce(OH)3
Ce(OH)4 		Pr(OH)3 Nd(OH)3 Pm(OH)3 Sm(OH)3 Eu(OH)2
Eu(OH)3 		Gd(OH)3 Tb(OH)3 Dy(OH)3 Ho(OH)3 Er(OH)3 Tm(OH)3 Yb(OH)3
** Ac(OH)3 Th(OH)4 Pa U(OH)2
U(OH)3
UO2(OH)2 		Np(OH)3
Np(OH)4
NpO2(OH)3 		Pu Am(OH)3 Cm(OH)3 Bk Cf Es Fm Md No
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