Constituent
Name
NH3 crystalline
Official name
Ammonia ice
Family
molecular solid
Class
polar molecular solid
Compound type
inorganic molecular solid
Constituent abundance in material
Relevance
main - major
Arrangement
single phase
Mass fraction
1.0 $\pm$ 0.0001
Mole fraction
1.0
Abundance comments
no impurity detectable in spectra
Chemical composition
Formula
$NH_3$
Chemical formula
NH3
Elemental formula
N H3
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$NH_3$ Ammonia molecule 1 1.0 1.0 pure main
Chemical bonds
  Bond Number Relevance
$>N-H$ 3 main
Class
molecular solids with polar molecules (02)
Type
with polyatomic inorganic polar molecules (02.02)
Phase name
cubic NH3 ice
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
tetartoidal
Crystal class symbol
23 (T)
Crystal spacegroup
P2(1)3
Texture
polycrystalline
Molar mass
17.0305 $g/mol$
Density
0.817 (193 K) $g/cm^3$
Refraction index $n_{\alpha}$
1.333
Diaphaneity
transparent
Luster
vitreous