a) Phase Equilibria
Vapor-Liquid-Equilibria
Liquid-Liquid-Equilibria
Gas Solubilities
Activity Coefficients at Infinite Dilution
Heats of Mixing
Azeotropic Data
Octanol Water Partition Coefficients
Separation Factors for Enzymes (Liquid-Liquid-Counter-Current-Chromatography)
Adsorption Equilibria
Solid-Liquid Equilibria

b) Pure Component Properties
Heat of Transition (Solid-Solid, Solid-Liquid, Solid-Vapor, Liquid-Vapor)
Temperature of Transition
Vapor Pressure
Liquid and Gas Density in a large temperature and pressure range
Liquid Viscosity

c) Reaction Kineticts
Heterogeneous Catalysis

Pure Component Properties
Vapor-Liquid-Equilibria
Liquid-Liquid-Equilibria
Solid-Liquid-Equilibria
Gas Solubilities
Activity Coefficients at Infinite Dilution
Heats of Mixing
Azeotropic Data
Octanol Water Partition Coefficients
Excess Heat Capacity
Vapor-Liquid Equilibria for Systems Containing Electrolytes
Excess Volumes

The databanks are available by Aspen Tech, DECHEMA (Internet), FIZ Karlsruhe (STN), DECHEMA Chemistry Data Series, and inhouse version by (DDBST, DECHEMA...)

g^E - Models (e.g. mod.Wilson)
Equation of State (e.g. PHCT, PSRK)
Group Contribution Methods (e. g. UNIFAC, mod. UNIFAC, K_ow(UNIFAC))
LIQUAC and LIFAC (Electrolytes)

Interactive Software Package for
Correlation, Prediction, and Graphical Presentation of Phase Equilibrium Data
Analysis of the Phase Equilibrium Behavior of Multicomponent Systems
Entrainer and Solvent Selection
Algorithm for Solving Enthalpy and Mass Balances
Model (Parameter) Examination for Process Simulation
Calculation of Real Behavior (Kg , Kj ) in Chemical Equilibria
Synthesis of Thermal Separation Processes

Continuous and Batch Rectification (Tray and Packing Columns)
Reactive Rectification
Membrane Processes
Separation of Enzymes or Enantiomers (LLCCC)

Synthesis, Simulation and Development of Separation Prosesses
Membrane Technology
Environmental Technology
Labor Safety

Arnold-Eucken-Preis from GVC 1982 (Gesellschaft für Verfahrenstechnik und Chemieingenieurwesen)

Rossini Lecture Award 2008 from the International Association of Chemical Thermodynamics

Editorial Board:
1) Fluid Phase Equilibria
2) The International Electronic Journal of Physico-Chemical Data
3) J. Chem. Eng. Data
4) Ind. Fug. Chem. Research

Reviewer:
I) Research Projects
a) Deutsche Forschungsgemeinschaft
b) Forschungsgemeinschaft der Tschechischen Republik
c) Forschungsgemeinschaft der Slowenischen Republik

II) Scientific Journals
a) Ind. Eng. Chem. Research
b) J. Chem. Eng. Data
c) Fluid Phase Equilibria
d) AIChE Journal
e) Cryogenics
f ) Can. J. Chem. Eng.
g) Berichte der Bunsengesellschaft
h) Thermochimica Acta
i ) Chem.-Ing.-Tech.

a) GVC-Fachausschuß "Thermische Zerlegung von Gas- und Flüssigkeitsgemischen"
b) GVC-Fachausschuß "Thermodynamik"
c) DECHEMA-Fachausschuß "Ingenieurdaten"

ACS, AIChE, Bunsengesellschaft, DECHEMA, GDCh, VDI (GVC), SPEJ (Society of Process Engineers of Japan), DGMK

1) J. Gmehling, U. Onken
Vapor-Liquid Equilibrium Data Collection, Bd. I, Bd. IIa
DECHEMA Chemistry Data Series, Frankfurt 1977-1978

2) J. Gmehling, U. Onken, W. Arlt
Vapor-Liquid Equilibrium Data Collection, Part. IIb ff., 8 Parts
DECHEMA Chemistry Data Series, Frankfurt ab 1978

3) J. Gmehling, U. Onken, P.Grenzheuser, B. Kolbe, U. Weidlich
Vapor-Liquid Equilibrium Data Collection, Part IId, V, VIc
DECHEMA Chemistry Data Series, Frankfurt ab 1978

4) Aa. Fredenslund, J. Gmehling, P. Rasmussen
Vapor-Liquid Equilibria Using UNIFAC - A Group Contribution Method
Elsevier, Amsterdam 1977

4a) Aa. Fredenslund, J. Gmehling, P. Rasmussen:
UNIFAC - A Group Contribution Method for Vapor-Liquid Equilibrium Calculation
(Chinese Translation), Chemical Industry Publication, Peking (1982)

5) J.M. Prausnitz, J. Gmehling
Thermodynamik der Phasengleichgewichte, Krausskopf-Verlag, Mainz 1980

6) C. Christensen, J. Gmehling, P. Rasmussen, U. Weidlich
Heats of Mixing Data Collection, 2 Parts
DECHEMA Chemistry Data Series, Frankfurt 1984

7) D.Tiegs, J.Gmehling, A.Medina, M.Soares, J.Bastos, P.Alessi, I.Kikic
Activity Coefficients at Infinite Dilution, 2 Parts
DECHEMA Chemistry Data Series, Frankfurt 1986

8) J. Gmehling, B. Kolbe
Thermodynamik, Thieme-Verlag, Stuttgart 1988

8a) J. Gmehling, B. Kolbe
Thermodynamik (Japanese Version (translated by K. Tochigi and K. Kojima))
Kagaku Kogyosha, Tokio 1993

9) J. Gmehling, U. Onken, J.Rarey-Nies
Vapor-Liquid Equilibrium Data Collection, Part Ib, IIe, IIf, IIIa, IIIb, IVa
DECHEMA Chemistry Data Series, Frankfurt ab 1988

10) J. Gmehling, T.Holderbaum
Heats of Mixing Data Collection
DECHEMA Chemistry Data Series, Vol. III, Supplement 1 + 2
DECHEMA, Frankfurt ab 1988

11) J. Gmehling ( Editor )
Software Development in Chemistry 5
Proceedings of the Workshop "Computers in Chemistry", Oldenburg
Springer-Verlag, Berlin 1991

12 J. Gmehling, B. Kolbe
Thermodynamik, 2. Edition, VCH-Verlag, Weinheim 1992

13) J. Gmehling, J. Menke, J. Krafczyk, K. Fischer
Azeotropic Data, 2 Parts, VCH-Verlag, Weinheim 1994

14) J. Gmehling, J. Menke, M. Schiller
Activity Coefficients at Infinite Dilution, Supplement 3+4
DECHEMA Chemistry Data Series, Frankfurt 1994

15) J. Gmehling, A. Brehm
Lehrbuch der Technischen Chemie - Grundoperationen
Thieme-Verlag, Stuttgart 1996

16) J. Gmehling, U. Onken
Vapor-Liquid Equilibrium Data Collection, Part IVb, Part VId, Part VIe, Part VIIa, Part VIIb, Part VIIIa
DECHEMA Chemistry Data Series, Frankfurt from 1998 on