Preferred Label : triple point;
IUPAC definition : The point in a one-component system at which the temperature and pressure of three
phases are in equilibrium. If there are p possible phases, there are p ! ( p- 3 )
! 3 ! triple points. Example: In the sulfur system four possible triple points (one
metastable) exist for the four phases comprising rhombic S (solid), monoclinic S (solid),
S (liquid) and S (vapour).;
Origin ID : T06502;
See also
The point in a one-component system at which the temperature and pressure of three
phases are in equilibrium. If there are p possible phases, there are p ! ( p- 3 )
! 3 ! triple points. Example: In the sulfur system four possible triple points (one
metastable) exist for the four phases comprising rhombic S (solid), monoclinic S (solid),
S (liquid) and S (vapour).
