Dortmund Data Bank
Excess Enthalpy Data
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.
Enthalpy of Mixing Data Set 2229
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
H2O |
18.015 |
7732-18-5 |
Water |
| 2 |
C5H9NO |
99.133 |
872-50-4 |
N-Methyl-2-pyrrolidone |
Search the DDB for all data of this mixture
Miscibility gap: No
Constant Value
Data Table
| hE [cal/mol] |
x1 [mol/mol] |
| -154.000 |
0.12000 |
| -346.000 |
0.26300 |
| -512.000 |
0.43200 |
| -707.000 |
0.64000 |
| -648.000 |
0.76200 |
| -563.000 |
0.84200 |
| -441.000 |
0.89900 |
| -280.000 |
0.94100 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| MacDonald D.D.; Dunay D.; Hanlon G.; Hyne J.B.: Properties of the N-Methyl-2-Pyrrolidinone-Water System. Can.J.Chem.Eng. 49 (1971) 420-423 |
Enthalpy of Mixing Data Set 2230
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
H2O |
18.015 |
7732-18-5 |
Water |
| 2 |
C5H9NO |
99.133 |
872-50-4 |
N-Methyl-2-pyrrolidone |
Search the DDB for all data of this mixture
Miscibility gap: No
Constant Value
Data Table
| hE [J/mol] |
x1 [mol/mol] |
| -83.900 |
0.01730 |
| -170.700 |
0.03440 |
| -345.000 |
0.06850 |
| -683.100 |
0.13250 |
| -1280.800 |
0.24370 |
| -2129.100 |
0.41320 |
| -2792.000 |
0.62590 |
| -2256.800 |
0.83940 |
| -2238.500 |
0.83940 |
| -2238.000 |
0.83940 |
| -1097.400 |
0.93960 |
| -1087.000 |
0.93960 |
| -535.600 |
0.97300 |
| -530.700 |
0.97300 |
| -265.300 |
0.98710 |
| -263.200 |
0.98710 |
| -133.900 |
0.99370 |
| -131.900 |
0.99370 |
| -67.000 |
0.99680 |
| -66.400 |
0.99680 |
| -33.300 |
0.99840 |
| -33.000 |
0.99840 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| Murakami S.; Tanaka R.; Fujishiro R.: I. Enthalpies of Transfer of 1-Methyl-2-pyrrolidinone from Water to Aqueous Methanol. J.Solution Chem. 3 (1974) 71-79 |
Enthalpy of Mixing Data Set 8174
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
H2O |
18.015 |
7732-18-5 |
Water |
| 2 |
C5H9NO |
99.133 |
872-50-4 |
N-Methyl-2-pyrrolidone |
Search the DDB for all data of this mixture
Miscibility gap: No
Constant Value
| Temperature |
416.290 |
K |
| Pressure |
24.000 |
bar |
Data Table
| hE [J/mol] |
x1 [mol/mol] |
| -93.380 |
0.06360 |
| -208.200 |
0.14540 |
| -207.400 |
0.14540 |
| -249.700 |
0.17300 |
| -378.600 |
0.25990 |
| -380.800 |
0.25990 |
| -378.200 |
0.25990 |
| -489.700 |
0.33980 |
| -571.500 |
0.40490 |
| -665.300 |
0.48640 |
| -722.100 |
0.55330 |
| -768.800 |
0.64150 |
| -725.500 |
0.76310 |
| -586.200 |
0.84300 |
| -582.200 |
0.84300 |
| -487.600 |
0.87900 |
| -368.100 |
0.91330 |
| -254.500 |
0.94150 |
| -255.500 |
0.94150 |
| -184.400 |
0.95880 |
| -115.600 |
0.97410 |
| -53.950 |
0.98770 |
| -31.400 |
0.99280 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| Noll O.; Fischer K.; Gmehling J.: Vapor-Liquid Equilibria and Enthalpies of Mixing for the Binary System Water + N-Methyl-2-pyrrolidone in the Temperature Range 80-140 °C. J.Chem.Eng.Data 41 (1996) 1434-1438 |
Diagrams
List of All References
| Source |
| Noll O.; Fischer K.; Gmehling J.: Vapor-Liquid Equilibria and Enthalpies of Mixing for the Binary System Water + N-Methyl-2-pyrrolidone in the Temperature Range 80-140 °C. J.Chem.Eng.Data 41 (1996) 1434-1438 |
| MacDonald D.D.; Dunay D.; Hanlon G.; Hyne J.B.: Properties of the N-Methyl-2-Pyrrolidinone-Water System. Can.J.Chem.Eng. 49 (1971) 420-423 |
| Murakami S.; Tanaka R.; Fujishiro R.: I. Enthalpies of Transfer of 1-Methyl-2-pyrrolidinone from Water to Aqueous Methanol. J.Solution Chem. 3 (1974) 71-79 |
Excess Enthalpy Data Overview
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