64. Equations of state, phase equilibria, and phase transitions (see also 82.60 Chemical thermodynamics) ( 0 Dok.)

• 64.10.+h General theory of equations of state and phase equilibria (see also 05.70.C Thermodynamic functions and equations of state) ( 0 Dok. )

• 64.30.+t Equations of state of specific substances ( 0 Dok. )

• 64.60.-i General studies of phase transitions (see also 63.70 Statistical mechanics of lattice vibrations and displacive phase transitions; for critical phenomena in solid surfaces and interfaces, and in magnetism, see 68.35.R, and 75.40, respectively) ( 0 Dok. )

• 64.70.-p Specific phase transitions ( 0 Dok. )

• 64.75.+g Solubility, segregation, and mixing; phase separation (see also 82.60.L Thermodynamics of solutions) ( 0 Dok. )

• 64.90.+b Other topics in equations of state, phase equilibria, and phase transitions (restricted to new topics in section 64) ( 0 Dok. )