Dortmund Data Bank

Activity Coefficients at Infinite Dilution

The experimental data shown in these pages are freely available and have been published already in the DDB Explorer Edition. The data represent a small sub list of all available data in the Dortmund Data Bank. For more data or any further information please search the DDB or contact DDBST.


No. Formula Molar Mass CAS Registry Number Name
1 C2H6O 46.069 64-17-5 Ethanol
2 C5H9NO 99.133 872-50-4 N-Methyl-2-pyrrolidone
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Ethanol solved in N-Methyl-2-pyrrolidone

Temperature [K] Activity Coeff. at Inf. Dil. Measurement Method Source
298.15 0.5300 STAT 2
298.15 0.6700 GLCR 3
323.35 0.6600 GLCR 1

List of measurement methods

Short Term Explanation
GLCR GLC (with gas phase correction)
STAT static method

List of References

1 Weidlich U.; Roehm H.-J.; Gmehling J.: 2. Results for the Stationary Phases N-Formylmorpholine and N-Methylpyrrolidone. J.Chem.Eng.Data 32 (1987) 450-453
2 Park J.H.; Hussam A.; Couasnon P.; Fritz D.; Carr P.W.: Experimental Reexamination of Selected Partition Coefficients from Rohrschneider´s Data Set. Anal.Chem. 59 (1987) 1970-1976
3 Sitnyakovskii I.B.; Gaile A.A.; Semenov L.V.: Selectivity of Solvents in Separation of Mixtures of Oxygen-Containing Organic Compounds. J.Appl.Chem.USSR 62 (1989) 2564-2566


Activity Coefficients at Infinite Dilution of Ethanol+N-Methyl-2-pyrrolidone
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Activity Coefficient at Infinite Dilution Data Overview