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 CH4O 32.042 67-56-1 Methanol
2 C5H9NO 99.133 872-50-4 N-Methyl-2-pyrrolidone
Search the DDB for all data of this mixture

Methanol solved in N-Methyl-2-pyrrolidone

Temperature [K] Activity Coeff. at Inf. Dil. Measurement Method Source
298.15 0.5000 GLCR 2
310.00 0.5750 GLCN 1
310.15 0.5800 GLCI 3

List of measurement methods

Short Term Explanation
GLCI GLC (without gas phase correction)
GLCN GLC (not specified)
GLCR GLC (with gas phase correction)

List of References

1 Rajeshwar Rao B.; Bhagat S.D.: Evaluation of solute-solvent interactions of some nonelectrolytes with N-methylpyrrolidone by gas-liquid partition chromatography. Indian J.Chem.Sect.A 29 (1990) 652-655
2 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
3 Rajeshwar Rao B.; Bhagat S.D.: Thermodynamics of solution of some nonelectrolyte solutes at infinite dilution in N-methylpyrrolidone stationary phase by gas liquid partition chromatography. Indian J.Chem.Sect.A 30 (1991) 751-755


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