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 C6H12 84.161 110-82-7 Cyclohexane
2 C5H9NO 99.133 872-50-4 N-Methyl-2-pyrrolidone
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N-Methyl-2-pyrrolidone solved in Cyclohexane

Temperature [K] Activity Coeff. at Inf. Dil. Measurement Method Source
298.15 31.040 EBUL 1
323.15 22.020 EBUL 1
348.15 6.1700 EBUL 1

List of measurement methods

Short Term Explanation
EBUL ebulliometry

List of References

1 Frost R.; Bittrich H.-J.: Bestimmung von Grenzaktivitätskoeffizienten N-alkylierter Carbonsäureamide in Benzol und Cyclohexan. Wiss. Z.TH Leuna-Merseburg 16 (1974) 18-22


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