Solid phase
Official name
Lanthanum hydroxide
Secondary names
Lanthanum(III) hydroxide; Lanthanum trihydroxide; Lanthanum(3+);trihydroxide
CAS number
14507-19-8
Type
Family
ionic solid
Class
alkali salt
Compound type
hydroxide
Chemical composition
Formula
$La{3+} \cdot (OH^-)_3$
Chemical formula
La(OH)3
Elemental formula
(La3+) H3 (O-)3
Isotope mixture type
terrestrial abundance
8.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$La^{3+}$ Lanthanum cation element 1 0.25 1 constituent cation main
$(OH)^-$ Hydroxide anion chemical function 3 0.75 1 anionic radical main
Chemical functions
  Function Number
$(OH)^-$ 3
Chemical bonds
  Bond Number
$\cdot (\cdot) La^{3+} \cdot O^{-}-$ 9
$O^--H$ 1
Class
alkali salts (06)
Type
simple alkali salts (06.01)
Phase type
crystalline
Crystal system
hexagonal
Crystal class
dipyramidal
Crystal class symbol
6/m (C6h)
Crystal spacegroup
P6(3)/m
Comments
another less stable (highet T ?) hexagonal phase also exit with crystal_spacegroup = P6(3)
Molar mass
189.93 $g/mol$
Density
4.38 $g/cm^3$
State NTP
solid
Refringence type
uniaxial
Pure color
colorless
Color
white
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