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 9135
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
C4H10O |
74.123 |
71-36-3 |
1-Butanol |
| 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 |
413.150 |
K |
| Pressure |
23.750 |
bar |
Data Table
| hE [J/mol] |
x1 [mol/mol] |
| -132.381 |
0.05270 |
| -256.176 |
0.10500 |
| -382.692 |
0.15710 |
| -499.458 |
0.20890 |
| -608.042 |
0.26040 |
| -719.582 |
0.31160 |
| -807.313 |
0.36250 |
| -883.240 |
0.41320 |
| -943.188 |
0.46360 |
| -983.633 |
0.51370 |
| -1007.980 |
0.56350 |
| -1005.000 |
0.61310 |
| -986.099 |
0.66230 |
| -937.803 |
0.71140 |
| -860.134 |
0.76010 |
| -764.169 |
0.80860 |
| -625.946 |
0.85680 |
| -459.369 |
0.90480 |
| -252.633 |
0.95250 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| Gmehling J.: unpublished data. Unpublished Data (2011) 1-43 |
Enthalpy of Mixing Data Set 10018
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
C4H10O |
74.123 |
71-36-3 |
1-Butanol |
| 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] |
| 4.500 |
0.00600 |
| 10.500 |
0.01120 |
| 34.600 |
0.03380 |
| 35.600 |
0.03590 |
| 70.300 |
0.07270 |
| 82.600 |
0.08610 |
| 87.300 |
0.08710 |
| 114.000 |
0.12100 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| Sitnyakovskii I.B.; Semenov L.V.; Gaile A.A.; Koldobovskaya L.L.: Intermolecular interactions of N-methylpyrrolidone with oxygen-containing organic substances. Zh.Prikl.Khim. 63 (1990) 898-902 |
Enthalpy of Mixing Data Set 16595
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
C4H10O |
74.123 |
71-36-3 |
1-Butanol |
| 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 |
298.150 |
K |
| Pressure |
1.010 |
bar |
Data Table
| hE [J/mol] |
x1 [mol/mol] |
| 204.400 |
0.28030 |
| 234.700 |
0.32470 |
| 254.500 |
0.35360 |
| 268.100 |
0.37540 |
| 282.500 |
0.40250 |
| 300.900 |
0.44270 |
| 311.600 |
0.57130 |
| 293.100 |
0.61740 |
| 273.400 |
0.66680 |
| 261.000 |
0.70570 |
| 241.800 |
0.73760 |
| 215.700 |
0.78160 |
| 190.500 |
0.82120 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| Letcher T.M.; Lachwa J.; Domanska U.: The excess molar volumes and enthalpies of (N-methyl-2-pyrrolidinone + an alcohol) at T = 298.15 K and the application of the ERAS theory). J.Chem.Thermodyn. 33 (2001) 1169-1179 |
Diagrams
List of All References
| Source |
| Gmehling J.: unpublished data. Unpublished Data (2011) 1-43 |
| Sitnyakovskii I.B.; Semenov L.V.; Gaile A.A.; Koldobovskaya L.L.: Intermolecular interactions of N-methylpyrrolidone with oxygen-containing organic substances. Zh.Prikl.Khim. 63 (1990) 898-902 |
| Letcher T.M.; Lachwa J.; Domanska U.: The excess molar volumes and enthalpies of (N-methyl-2-pyrrolidinone + an alcohol) at T = 298.15 K and the application of the ERAS theory). J.Chem.Thermodyn. 33 (2001) 1169-1179 |
Excess Enthalpy Data Overview
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