Lithium compounds: lithium hydroxide monohydrate

lithium symbol icon

The lithium in lithium hydroxide monohydrate formally is in the oxidation state 1.

Lithium hydroxide monohydrate

  • Formula as often written: LiOH.H2O
  • Hill system formula: H3Li1O2
  • CAS registry number: [1310-66-3]
  • Formula weight: 41.964
  • Class: complex


  • lithium hydroxide monohydrate
  • lithium(I) hydroxide monohydrate
  • lithium hydroxide 1-water

Physical properties

  • Colour: white
  • Appearance: crystalline solid
  • Melting point:
  • Boiling point:
  • Density: 1510 kg m-3


Coming soon...

Element analysis

Element percentages for the elements in lithium hydroxide monohydrate
Element %
H 7.21
Li 16.54
O 76.25


One way to prepare lithium(I) hydroxide is the reaction between lithium (I) sulphate and barium hydroxide, Ba(OH)2.

Li2SO4(aq) + Ba(OH)2(aq) → 2LiOH(aq) + BaSO4(s)

Isotope pattern

What follows is the calculated isotope pattern for the LiOH.H2O unit with the most intense ion set to 100%.

Formula: Li1O2H3

mass  %
41   8.1 ____
42 100.0 __________________________________________________
43 0.1
44 0.4


The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

  • R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
  • N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
  • F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
  • A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
  • R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
  • A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
  • A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
  • J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
  • D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
  • J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
  • J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.

WebElements Shop

WebElements now has a WebElements shop at which you can buy periodic table posters, mugs, T-shirts, games, fridge magnets, molecular models, and more.

Periodic Table fridge magnets Periodic Table fridge magnets
Buy our periodic table fridge magnets here

WebElements poster Periodic table t-shirts Periodic table mouse mats Molymod molecular model kits Chemistry educational resources

lithium atomic number