ACT – Activity Coefficients at Infinite Dilution

Activity coefficients at infinite dilution (ACT) are available for a very large number of binary mixtures and are of great importance if high purities need to be achieved as the real behavior of liquid mixtures can usually not be extrapolated from VLE or HPV data with sufficient reliability. In addition, these values allow to judge the effect of extractive solvents in extractive distillation and help to decide whether to expect azeotropic behavior or limited miscibility. In addition, this information is vital for the correct description of the behavior of impurities and by-products, which are mostly present in low concentration. As water is the most common solvent in this data bank, ACT is also of great value to estimate the concentrations of chemicals in waste streams. The ACT data bank is required by the process synthesis software for the selection of entrainers for extractive distillation using DDB.

The picture on the right shows the temperature dependence of the limiting activity coefficients in the mixture acetone - water together with curves calculated from the NRTL model with binary interaction parameters regressed simultaneously to VLE, hE and limiting activity coefficient data. If these data are not included in the parameter regression, in most cases a very unreliable representation of the phase equilibrium behavior in the top and bottom of the column is observed leading to a large error in the required number of stages and reflux ratio.

A full list of systems is available in our DDB Online Search system. The page might take some seconds to load because of its size.

 

Data Tables, Monographies

2008	DECHEMA Chemistry Data Series, Activity Coefficients at Infinite Dilution. Part 6: C 17 - C 78 with D 2 O and H 2 O	Gmehling J., Tiegs D., Medina A., Soares M., Bastos J., Alessi P., Kikic I., Schiller M., Menke J.	Vol., 9.6, 6, 1-325 (2008)
2007	DECHEMA Chemistry Data Series, Activity Coefficients at Infinite Dilution. Part 5: C 1 - C 16	Gmehling J., Tiegs D., Medina A., Soares M., Bastos J., Alessi P., Kikic I., Schiller M., Menke J.	Vol., 9.5, 6, 1-636 (2007)
1994	DECHEMA Chemistry Data Series, Activity Coefficients at Infinite Dilution. Part 3, 4: Supplement C 1 - C 9 , C 10 - C 36 with SO 2 , H 2 O	Gmehling J., Tiegs D., Medina A., Soares M., Bastos J., Alessi P., Kikic I., Schiller M., Menke J.	Vol., 9.3+9.4, 6, 1-505 (1994)
1986	DECHEMA Chemistry Data Series, Activity Coefficients at Infinite Dilution. Part 1, 2: C 1 - C 9 , C 10 - C 36	Gmehling J., Tiegs D., Medina A., Soares M., Bastos J., Alessi P., Kikic I., Schiller M., Menke J.	Vol., 9.1+9.2, 6, 1-955 (1986)

Selected Scientific Papers

1999	Bestimmung von Aktivitaetskoeffizienten bei unendlicher Verduennung mit Hilfe der Dilutor-Technik	Gruber D., Krummen M., Gmehling J.	Journal	Chem.Ing.Tech., 71, 5, 503 508 (1999)
1987	Measurement of gamma infinite using GLC. 2. Results for the Stationary Phases N-Formylmorpholine and N-Methylpyrrolidone	Weidlich U., Roehm H.-J., Gmehling J.	Journal	J.Chem.Eng.Data, 32, 4, 450 453 (1987)
1987	Measurement of gamma infinite using Gas-Liquid Chromatography. 1. Results for the Stationary Phases n-Octacosane, 1-Docosanol, 10-Nonadecanone, and 1-Eicosene	Weidlich U., Gmehling J.	Journal	J.Chem.Eng.Data, 32, 2, 138 142 (1987)
1986	Extension of Unifac by Headspace Gas Chromatography. 2.	Weidlich U., Berg J., Gmehling J.	Journal	J.Chem.Eng.Data, 31, 3, 313 317 (1986)
1985	Extension of UNIFAC by Headspace Gas Chromatography	Weidlich U., Gmehling J.	Journal	J.Chem.Eng.Data, 30, 1, 95 101 (1985)

Selected Scientific Papers (Experimental Data)

2009	Measurement and Prediction of Activity Coefficients at Infinite Dilution (gamma infinite), Vapor-Liquid Equilibria (VLE) and Excess Enthalpies (hE) of Binary Systems with 1,1-Dialkyl-Pyrrolidinium Bis(Trifluoromethylsulfonyl)imide using Modified UNIFAC (Dortmund)	Nebig S., Liebert V., Gmehling J.	Journal	Fluid Phase Equilib., 277, 1, 61 67 (2009)
2008	Vapour-liquid equilibria, azeotropic data, excess enthalpies, activity coefficients at infinite dilution and solid-liquid equilibria for binary alcohol-ketone systems	Abbas R., Gmehling J.	Journal	Fluid Phase Equilib., 267, 2, 119 126 (2008)
2005	Activity Coefficient at Infinite Dilution, Azeotropic Data, Excess Enthalpies and Solid-Liquid-Equilibria for Binary Systems of Alkanes and Aromatics with Esters	Collinet E., Gmehling J.	Journal	Fluid Phase Equilib., 230, 1-2, 131-142 (2005)
2005	Isothermal Vapor-Liquid Equilibrium, Excess Enthalpy Data, and Activity Coefficients at Infinite Dilution for the Binary System Water + Methyl Lactate	Sanz M.T., Gmehling J.	Journal	J.Chem.Eng.Data, 50, 1, 85 88 (2005)
2004	Activity Coefficients at Infinite Dilution of Various Solutes in the Ionic Liquids [MMIM]+[CH3SO4]-, [MMIM]+[CH3OC2H4SO4]-, [MMIM]+[(CH3)2PO4]-, [C5H5NC2H5]+[(CF3SO2)2N]- and [C5H5NH]+[C2H5OC2H4OSO3]-	Kato R., Gmehling J.	Journal	Fluid Phase Equilib., 226, 6, 37 44 (2004)
2004	Measurement of Activity Coefficients at Infinite Dilution of Benzene, Toluene, Ethanol, Esters, Ketones, and Ethers at Various Temperatures in Water Using the Dilutor Technique	Atik Z., Gruber D., Krummen M., Gmehling J.	Journal	J.Chem.Eng.Data, 49, 5, 1429 1432 (2004)
2004	Influence of Water on the Vapor-Liquid Equilibria, Activity Coefficients at Infinite Dilution and Enthalpies of Mixing for Mixtures of n-Methyl-2-Pyrrolidone with C5 or C6 Hydrocarbons	Fischer K., Gmehling J.	Journal	Fluid Phase Equilib., 218, 1, 69 76 (2004)
2004	Measurement of Activity Coefficients at Infinite Dilution in n-Methyl-2-Pyrrolidone and n-Formylmorpholine and their Mixtures with Water Using the Dilutor Technique	Krummen M., Gmehling J.	Journal	Fluid Phase Equilib., 215, 2, 283 294 (2004)
2002	Measurement of Activity Coefficients at Infinite Dilution Using Gas-Liquid Chromatography. 13. Results for Various Solutes with the Stationary Phases 1-Ethylpyrrolidin-2-one and 1,5-Dimethylpyrrolidin-2-one	Krummen M., Letcher T., Gmehling J.	Journal	J.Chem.Eng.Data, 47, 4, 906 910 (2002)
2000	Measurement of Activity Coefficients at Infinite Dilution Using Gas-Liquid Chormatography. 12. Results for Various Solutes with the Stationary Phases N-Ethylacetamied, N,N-Diethylacetamide, Diethylphthalate, and Glutaronitrile	Krummen M., Gruber D., Gmehling J.	Journal	J.Chem.Eng.Data, 45, 5, 771 775 (2000)
2000	Measurement of Activity Coefficients at Infinite Dilution in Solvent Mixtures Using the Dilutor Technique	Krummen M., Gruber D., Gmehling J.	Journal	Ind.Eng.Chem.Res., 39, 6, 2114 2123 (2000)
2000	Measurement of Activity Coefficients at Infinite Dilution Using Gas-Liquid Chromatography. 11. Results for Various Solutes with the Stationary Phases e-Caprolacetone and Ethyl Benzoate	Topphoff M., Gruber D., Gmehling J.	Journal	J.Chem.Eng.Data, 45, 3, 484 486 (2000)
1999	Isothermal P, x Data and Excess Enthalpies for Two Binary Systems	Strothmann B., Noll O., Fischer K., Gmehling J.	Journal	J.Chem.Eng.Data, 44, 3, 379 382 (1999)
1999	Various Thermodynamic Properties for Binary Systems with Tertiary Ethers	Heine A., Fischer K., Gmehling J.	Journal	J.Chem.Eng.Data, 44, 3, 373 378 (1999)
1999	Vapor-Liquid Equilibria and Vapor Pressure Data for the Systems Ethyl tert-Butyl Ether + Ethanol and Ethyl tert-Butyl Ether and Water	Rarey J., Horstmann S., Gmehling J.	Journal	J.Chem.Eng.Data, 44, 3, 532 538 (1999)
1999	Measurement of Thermodynamic Properties for the System Sulfur Hexafluoride + Water	Strothmann B., Fischer K., Gmehling J.	Journal	J.Chem.Eng.Data, 44, 3, 388 392 (1999)
1999	The Determination of Activity Coefficients at Infinite Dilution with the Help of the Dilutor Technique (Inert Gas Stripping)	Gruber D., Krummen M., Gmehling J.	Journal	Chem.Eng.Technol., 22, 10, 827 831 (1999)
1999	Measurement of Activity Coefficients at Infinite Dilution Using Gas-Liquid Chromatography. 10. Results for Various Solutes with the Stationary Phases Dimethyl Sulfoxide, Propylene Carbonate, and N-Ethylformamide	Topphoff M., Gruber D., Gmehling J.	Journal	J.Chem.Eng.Data, 44, 6, 1355 1359 (1999)
1998	Measurement of Activity Coefficients at Infinite Dilution Using Gas-Liquid Chromatography. 7. Results for Various Solutes with N-Methyl-2-piperidone as Stationary Phase	Gruber D., Langenheim D., Moollan W., Gmehling J.	Journal	J.Chem.Eng.Data, 43, 2, 226 229 (1998)
1998	Measurement of Activity Coefficients at Infinite Dilution Using Gas-Liquid Chromatography. 9. Results for Various Solutes with the Stationary Phases 2-Pyrrolidone and N-Methylformamide	Gruber D., Topphoff M., Gmehling J.	Journal	J.Chem.Eng.Data, 43, 6, 935 940 (1998)
1997	Measurement of activity coefficients at infinite dilution using gas-liquid chromatography. 8. Results for 22 solutes in tetraethylene glycol dimethyl ether and 18 solutes in triethylene glycol dibutyl ether at 303.15 K and 343.15 K	Gruber D., Topphoff M., Gmehling J.	Journal	Eldata Int.Electron.J.Phys.-Chem.Data, 3, 2, 215 224 (1997)
1997	Measurement of Activity Coefficients at Infinite Dilution using Gas-Liquid Chromatography. 6. Results for Systems Exhibiting Gas-Liquid Interface Adsorption with 1-Octanol	Gruber D., Langenheim D., Gmehling J., Moollan W.	Journal	J.Chem.Eng.Data, 42, 5, 882 885 (1997)
1997	Measurement of Activity Coefficients at Infinite Dilution Using Gas-Liquid Chromatography. 5. Results for N-Methylacetamide, N,N-Dimethylacetamide, N,N-Dibutylformamide, and Sulfolane as Stationary Phases	Moellmann C., Gmehling J.	Journal	J.Chem.Eng.Data, 42, 1, 35 40 (1997)
1996	Vapor-liquid equilibria, activity coefficients at infinite dilution and heats of mixing for mixtures of N-methyl pyrrolidone-2 with C5 or C6 hydrocarbons and for hydrocarbon mixtures	Fischer K., Gmehling J.	Journal	Fluid Phase Equilib., 119, 7, 113 130 (1996)
1995	Activity Coefficients at Infinite Dilution of Fluorobenzene, 1´,1´,1´-Trifluorotoluene and Iodoethane in Toluene	Atik Z., Gmehling J.	Journal	J.Soc.Alger.Chim., 5, 2, 81 87 (1995)
1994	P-x and gamma infinite Data for the Different Binary Butanol-Water Systems at 50C	Fischer K., Gmehling J.	Journal	J.Chem.Eng.Data, 39, 2, 309 315 (1994)
1993	Messung von Aktivitaetskoeffizienten bei unendlicher Verduennung (gamma) in N-Octyl-2-pyrrolidon mittels Gas-Fluessigkeits-Chromatographie	Gmehling J., Moellmann C.	internal report	Unpublished Data, 38, 1, 1 2 (1993)
1993	Measurement of Activity Coefficients at Infinite Dilution Using Differential Ebulliometry and Non-Steady-State Gas-Liquid	Dallinga L., Schiller M., Gmehling J.	Journal	J.Chem.Eng.Data, 38, 1, 147 155 (1993)
1992	Bestimmung von Aktivitaetskoeffizienten bei unendlicher Verduennung (Henry-Koeffizienten) in verschiedenen Alkylglykoldialkylethern	Schiller M., Gmehling J.	Journal	Chem.Ing.Tech., 64, 5, 458 460 (1992)
1992	Measurement of Activity Coefficients at Infinite Dilution using Gas-Liquid Chromatography. 4. Results for Alkylene Glycol Dialkyl Ethers as Stationary Phases	Schiller M., Gmehling J.	Journal	J.Chem.Eng.Data, 37, 4, 503 508 (1992)
1989	Measurement of gamma infinite using Gas-Liquid Chromatography. 3. Results for the Stationary Phases 10-Nonadecanone, N-Formylmorpholine, 1-Pentanol, m-Xylene, and Toluene	Knoop C., Tiegs D., Gmehling J.	Journal	J.Chem.Eng.Data, 34, 2, 240 247 (1989)