The original data are given in the data sheets immediately following this Critical Evaluation.
The data point for the nitropropane-rich phase at 303 K (Hankinson and Thompson1) and also in the water-rich phase at 298 K (Hankinson and Thompson1) is marked disagreement with other studies and therefore rejected. All other reported data are used in Table 2 and Table 3 below.
Values obtained by the evaluator by graphical interpolation or extrapolation from the data sheets are presented in the Table 2 and Table 3. Data are"recommended" if two or more apparently reliable studies are is reasonable (±5% relative) agreement. All other data are regarded as tentative only.
The solubility of 1-nitropropane in water (x1) and solubility of water in 1-nitropropane (x2) reported in the above table have been approximated by equations:
x1 = 2·10-11· (T/K)4 - 3·10-8· (T/K)3 + 2·10-5· (T/K)2 - 0.0044· (T/K) + 0.4128 (mean standard error of estimate was 0.0347).
x2 = -3·10-9· (T/K)4 + 5·10-6· (T/K)3 - 0.0022· (T/K)2+ 0.459· (T/K) - 36.292 (mean standard error of estimate was 0.0031).
This relationship is presented in Fig. 12
Table 2. Recommended and Tentative values for the mutual solubilities of 1-nitropropane (1) and water (2)
| C T (K) | D 100w1 | D x1 |
|---|---|---|
| 273.2 | 1.8 | 3.7 x 10-3 |
| 283.2 | 1.7 | 3.5 x 10-3 |
| 293.2 | 1.54 | 3.2 x 10-3 |
| 303.2 | 1.75 | 3.6 x 10-3 |
| 313.2 | 1.7 | 3.5 x 10-3 |
| 323.2 | 1.8 | 3.7 x 10-3 |
| 333.2 | 1.9 | 3.9 x 10-3 |
| 343.2 | 2.0 | 4.1 x 10-3 |
| 353.2 | 2.1 | 4.3 x 10-3 |
| 363.2 | 2.3 | 4.7 x 10-3 |
Table 3. Recommended and tentative values for the mutual solubilities of 1-nitropropane (1) and water (2)
| C T (K) | D 100w2 | D x2 | |
|---|---|---|---|
| 273.2 | 4 x 10-1 | 2.0 x 10-2 | |
| 283.2 | 5 x 10-1 | 2.4 x 10-3 | |
| 293.2 | 6 x 10-1 | 2.9 x 10-3 | |
| 303.2 | - | - | - |
| 313.2 | 1.0 | 4.8 x 10-2 | |
| 323.2 | 1.1 | 5.2 x 10-2 | |
| 333.2 | 1.4 | 6.6 x 10-2 | |
| 343.2 | 1.8 | 8.6 x 10-2 | |
| 353.2 | 1.9 | 8.7 x 10-2 | |
| 363.2 | 2.0 | 9.2 x 10-2 |
Figure
References:
1
Hankinson, R. W.; Thompson, D.; J. Chem. Eng. Data 10, 18-9 (1965).
2
Pol'shinskii, V. V.; Kozlov, L. M.; Chem. Technol. Fuels Oils 1970, 6(10), 730-734.
3
Hampe, M. J.; Chem. Ing. Tech. 57, 669-81 (1985).
4
Stephenson, R. M.; J. Chem. Eng. Data 37, 80-95 (1992).