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 1975
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
H2O |
18.015 |
7732-18-5 |
Water |
| 2 |
C4H10O |
74.123 |
71-36-3 |
1-Butanol |
Search the DDB for all data of this mixture
Miscibility gap: Yes
Constant Value
Data Table
| hE [J/mol] |
x1 [mol/mol] |
| 5.527 |
0.00300 |
| 12.351 |
0.00800 |
| 24.074 |
0.01300 |
| 32.741 |
0.01800 |
| 80.805 |
0.04100 |
| 126.441 |
0.06300 |
| 180.451 |
0.08900 |
| 284.702 |
0.14900 |
| 351.691 |
0.19100 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| Belousov V.P.; Panov M.Yu.: XI. Lösungsenthalpie des Wassers in den Alkoholen. Vestn.Leningr.Univ.Fiz.Khim. 10 (1976) 149-150 |
Enthalpy of Mixing Data Set 1976
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
H2O |
18.015 |
7732-18-5 |
Water |
| 2 |
C4H10O |
74.123 |
71-36-3 |
1-Butanol |
Search the DDB for all data of this mixture
Miscibility gap: Yes
Constant Value
Data Table
| hE [J/mol] |
x1 [mol/mol] |
| 72.850 |
0.03600 |
| 242.834 |
0.12600 |
| 372.625 |
0.21100 |
| 452.174 |
0.29500 |
| 452.174 |
0.32100 |
| 385.186 |
0.44000 |
| 262.094 |
0.56800 |
| -66.989 |
0.93500 |
| -80.387 |
0.95200 |
| -102.158 |
0.98400 |
| -33.913 |
0.99610 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| Belousov V.P.; Ponner V.: VI. Mischungswärme in binären Systemen n-Butanol-Wasser, Isobutanol-Wasser und sek.-Butanol-Wasser. Vestn.Leningr.Univ.Fiz.Khim. (1970) 111-115 |
Enthalpy of Mixing Data Set 1977
Components
| No. |
Formula |
Molar Mass |
CAS Registry Number |
Name |
| 1 |
H2O |
18.015 |
7732-18-5 |
Water |
| 2 |
C4H10O |
74.123 |
71-36-3 |
1-Butanol |
Search the DDB for all data of this mixture
Miscibility gap: Yes
Constant Value
Data Table
| hE [J/mol] |
x1 [mol/mol] |
| 168.728 |
0.04400 |
| 326.570 |
0.10900 |
| 540.097 |
0.22200 |
| 757.811 |
0.35400 |
| 791.305 |
0.38200 |
| 766.184 |
0.44800 |
| 728.503 |
0.49000 |
| 380.999 |
0.73000 |
| 91.691 |
0.93500 |
| -4.605 |
0.98700 |
| -13.398 |
0.99000 |
| -12.979 |
0.99130 |
| -8.374 |
0.99500 |
(hE - excess enthalpy, x - liquid mole fraction)
Reference
| Source |
| Belousov V.P.; Ponner V.: VI. Mischungswärme in binären Systemen n-Butanol-Wasser, Isobutanol-Wasser und sek.-Butanol-Wasser. Vestn.Leningr.Univ.Fiz.Khim. (1970) 111-115 |
Diagrams
List of All References
| Source |
| Belousov V.P.; Ponner V.: VI. Mischungswärme in binären Systemen n-Butanol-Wasser, Isobutanol-Wasser und sek.-Butanol-Wasser. Vestn.Leningr.Univ.Fiz.Khim. (1970) 111-115 |
| Belousov V.P.; Panov M.Yu.: XI. Lösungsenthalpie des Wassers in den Alkoholen. Vestn.Leningr.Univ.Fiz.Khim. 10 (1976) 149-150 |
Excess Enthalpy Data Overview
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