Components:
(1) Nitromethane,
CH3NO2 ; [75-52-5]
NIST WebBook
(2) 1,4-Dichlorobenzene,
C6H4Cl2; [106-46-7]
NIST WebBook
(3) Heptane,
C7H16; [142-82-5]
NIST WebBook
Original Measurements
Patel, A. N.; J. Chem. Eng. Data 26, 124-7 (1981).
Variables:
Ambient temperature: 294 K
Prepared by:
Method/Apparatus/Procedure:
Two methods were used. The binodal solubility curve was determined by the method of appearance and disappearance of turbidity (Othmer et al.1). The analytical method was used to determine equilibrium liquid phase compositions. Various mixtures of known composition within the heterogenous region were prepared and brought to equilibrium. Conjugate phases were analyzed by refractive index measurement in conjunction with calibration curve prepared with mixtures of known composition on the solubility curve. Values of composition determined were checked by material-balance calculation.
Source and Purity of Materials:
- Source not specified; laboratory grade reagent; not purified.
- Source not specified; laboratory grade reagent; not purified.
- Source not specified; laboratory grade reagent; not purified.
Estimated Errors:
Ambient temperature: control to ±0.5 K
Titer: ±0.05 mL
Weight: to 0.1 mg.
References
1 Othmer, D. F.; White, R. E.; Trueger, E.; Ind. Eng. Chem. 1941, 33(10), 1240-8.
Experimental Values:
Table 1. Mutual solubility of nitromethane, 1,4-dichlorobenzene and heptane
| T (°C) | T (K) | w1 | w2 | x1 | x2 |
|---|---|---|---|---|---|
| 20.5 | 293.7 | 6.2 x 10-2 | 0.0 | 9.8 x 10-2 | 0.0 |
| 20.5 | 293.7 | 7.6 x 10-2 | 3.5 x 10-2 | 1.20 x 10-1 | 2.3 x 10-2 |
| 20.5 | 293.7 | 7.6 x 10-2 | 1.14 x 10-1 | 1.23 x 10-1 | 7.7 x 10-2 |
| 20.5 | 293.7 | 7.6 x 10-2 | 2.08 x 10-1 | 1.27 x 10-1 | 1.44 x 10-1 |
| 20.5 | 293.7 | 8.5 x 10-2 | 2.95 x 10-1 | 1.45 x 10-1 | 2.09 x 10-1 |
| 20.5 | 293.7 | 1.10 x 10-1 | 3.70 x 10-1 | 1.89 x 10-1 | 2.65 x 10-1 |
| 20.5 | 293.7 | 2.01 x 10-1 | 4.08 x 10-1 | 3.30 x 10-1 | 2.78 x 10-1 |
| 20.5 | 293.7 | 3.70 x 10-1 | 3.80 x 10-1 | 5.44 x 10-1 | 2.32 x 10-1 |
| 20.5 | 293.7 | 5.00 x 10-1 | 3.38 x 10-1 | 6.77 x 10-1 | 1.90 x 10-1 |
| 20.5 | 293.7 | 5.94 x 10-1 | 2.94 x 10-1 | 7.57 x 10-1 | 1.56 x 10-1 |
| 20.5 | 293.7 | 7.10 x 10-1 | 2.11 x 10-1 | 8.39 x 10-1 | 1.04 x 10-1 |
| 20.5 | 293.7 | 8.00 x 10-1 | 1.43 x 10-1 | 8.95 x 10-1 | 6.6 x 10-2 |
| 20.5 | 293.7 | 8.76 x 10-1 | 7.7 x 10-2 | 9.35 x 10-1 | 3.4 x 10-2 |
| 20.5 | 293.7 | 9.40 x 10-1 | 1.5 x 10-2 | 9.66 x 10-1 | 6 x 10-3 |
| 20.5 | 293.7 | 9.57 x 10-1 | 0.0 | 9.73 x 10-1 | 0.0 |
Table 2. Compositions of equilibrium liquid phases of the ternary system
| T (°C) | T (K) | w1 | w2 | x1 | x2 |
|---|---|---|---|---|---|
| 20.5 | 293.7 | 9.33 x 10-1 | 1.7 x 10-2 | 9.61 x 10-1 | 7 x 10-3 |
| 20.5 | 293.7 | 8.74 x 10-1 | 7.0 x 10-2 | 9.33 x 10-1 | 3.1 x 10-2 |
| 20.5 | 293.7 | 8.42 x 10-1 | 1.00 x 10-1 | 9.16 x 10-1 | 4.5 x 10-2 |
| 20.5 | 293.7 | 8.13 x 10-1 | 1.37 x 10-1 | 8.97 x 10-1 | 6.3 x 10-2 |
| 20.5 | 293.7 | 7.80 x 10-1 | 1.55 x 10-1 | 8.82 x 10-1 | 7.3 x 10-2 |
| 20.5 | 293.7 | 7.10 x 10-1 | 2.10 x 10-1 | 8.39 x 10-1 | 1.03 x 10-1 |
| 20.5 | 293.7 | 7.9 x 10-2 | 3.2 x 10-2 | 1.25 x 10-1 | 2.1 x 10-2 |
| 20.5 | 293.7 | 7.8 x 10-2 | 1.35 x 10-1 | 1.27 x 10-1 | 9.1 x 10-2 |
| 20.5 | 293.7 | 7.6 x 10-2 | 1.95 x 10-1 | 1.26 x 10-1 | 1.35 x 10-1 |
| 20.5 | 293.7 | 7.6 x 10-2 | 2.45 x 10-1 | 1.29 x 10-1 | 1.72 x 10-1 |
| 20.5 | 293.7 | 8.5 x 10-2 | 2.95 x 10-1 | 1.45 x 10-1 | 2.09 x 10-1 |
| 20.5 | 293.7 | 1.10 x 10-1 | 3.70 x 10-1 | 1.89 x 10-1 | 2.65 x 10-1 |
