HSC Chemistry, HSC Chemistry 7, Software for Process simulation, Reactions Equations, Heat and Material Balances, Equilibrium Calculations, Electrochemical Cell Equilibriums, Eh-pH Diagrams – Pourbaix diagram
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Version 8 Modules
All modules included as standard

  1. Sim - Process simulation
  2. LCA Evaluation
  3. Mass Balance
  4. Reaction Equations
  5. Heat and Material Balances
  6. Heat Loss Calculator
  7. Equilibrium Calculations
  8. Exergy Balance
  9. Eh-pH Diagrams - Pourbaix
  10. H, S, Cp and Ellingham Diagrams
  11. Tpp Diagram-Stability diagrams
  12. Lpp Diagrams-Stability diagrams
  13. Water - Steam tables, etc.
  14. H, S, Cp Estimates
  15. Benson Estimation
  16. Species Converter
  17. Periodic Chart-Elements
  18. Measure Units
  19. HSC AddIn Functions
  20. Aqua
  21. Geo-Mineralogical calculations
  22. Map-GPS material stock
  23. Fit-Numerical Data fit
  24. Data-Statistical analysis
All included as standard

HSC Thermochemical Database
Water Steam/Fluid Database
Heat Conduction Database
Heat Convection Database
Surface Radiation Database
Gas Radiation Calculator
Particle Radiation Calculator
Elements Database
Measure Units Database
Minerals Database
Aqueous Solution Density Database
The Pitzer parameter Database

Phase stability diagrams show the stability (predominance) areas of condensed phases in a ternary system as a function of temperature or in isothermal conditions, with the remaining constraints as the other axis. These diagrams are very useful when a fast estimation of the prevailing phases is needed. It is assumed that all phases are pure substances. Mixture phases are not taken into account in basic phase stability diagrams.


The new HSC Chemistry 8.0 can draw two types of phase stability diagrams. The new Tpp Diagram module calculates the diagrams on the basis of minimum Gibbs energy (area graphics) and the old Lpp Diagram module calculates the phase stability boundaries as lines based on the reaction equations (vector graphics). These two modules have their own option buttons in the HSC main menu, i.e. Tpp and Lpp Diagram buttons.

The Tpp diagram module draws temperature partial pressure diagrams (T-p diagrams) as well as p-p diagrams with partial pressures on both axes. The old Lpp module only draws diagrams with selected partial pressures on both axes. Both these modules offer slightly different benefits and limitations; for example, the old Lpp module gives exact coordinates for the phase boundaries but the new Tpp module gives illustrative painted area diagrams and also a versatile T-p axis option.

The Tpp Diagram module calculates phase stability diagrams using partial pressures on both axes or temperature on the x-axis and partial pressure on the y-axis. This module calculates the diagram on the basis of minimum Gibbs energy. However, it does not check each x- and y-point in order to decrease calculation time. The calculation is made recursively using the preset resolution and a specific logout algorithm.