SDS Volume
Volume 72. Nitromethane with Water or Organic Solvents: Ternary and Quaternary Systems, p 1574
Source Publication
Sazonov, V. P.; Zhilyaeva, I. N.; Zh. Fiz. Khim. 45, 733-4 (1971).
Conditions:
Room Temp: 286 - 307 $\pu{K}$
Compilers:
Methodology:
The synthetic method (Alekseev [1]) was used. Mixtures of (1), (2) and (3) of total mass 10 g were heated with vigorous stirring to a temperature higher than the homogenization temperature, then slowly cooled until turbidity appeared. Heating and cooling cycles were repeated twice. Temperature values obtained for appearing and disappearing turbidity were averaged.
Sample Information:
- Source not specified; pure grade reagent; dried and twice distilled in glass packed column.
- Source not specified, analytical purity; twice distilled at vacuum; 0.03 mass% of water by the Karl Fischer analysis.
- Source not specified, pure grade reagent; dried and twice distilled at vacuum.
Measurement Errors:
Ambient temperature: ±0.02 K.
Methodology Citation
1 Alekseev, V. F.; Zh. Russ. Fiz. -Khim. O-va 8, 249 (1876).
System Components:
- Nitromethane, $\ce{ CH3NO2 }$; [75-52-5] NIST WebBook
- 1,2,3-Propanetriol, $\ce{ C3H8O3 }$; [56-81-5] NIST WebBook
- Octanoic acid, $\ce{ C8H16O2 }$; [124-07-2] NIST WebBook
Experimental Data
The temperatures of phase transitions were determined in ternary mixtures with a constant mass content of (2), respectively, 2.5, 5.0, 7.5, 10.0, 20.0, 40.0, 70.0 mass % and also in ternary mixtures with constant mass relationship of (1) and (3) as 45.0:55.0, 57.5:42.5, and 70.0:30.0, respectively. L1 nitromethane-rich phase; L2 propanetriol-rich phase; L3 acid-rich phase. The phase which is being dissolved is indicated in the table.
| $T$ (°C) | $T$ ($\pu{K}$) | w1 | w2 | $x_{1}$ | $x_{2}$ |
|---|---|---|---|---|---|
| 19.15 | 292.30 | 0.8288 | 0.0250 | 0.9135 | 0.0183 |
| 19.15 | 292.30 | 0.8075 | 0.0500 | 0.8963 | 0.0368 |
| 23.00 | 296.15 | 0.7600 | 0.0500 | 0.8700 | 0.0379 |
| 24.52 | 297.67 | 0.7125 | 0.0500 | 0.8420 | 0.0392 |
| 25.17 | 298.32 | 0.6650 | 0.0500 | 0.8122 | 0.0405 |
| 25.27 | 298.42 | 0.6175 | 0.0500 | 0.7803 | 0.0419 |
| 19.18 | 292.33 | 0.7863 | 0.0750 | 0.8788 | 0.0556 |
| 23.02 | 296.17 | 0.7400 | 0.0750 | 0.8525 | 0.0573 |
| 23.44 | 296.59 | 0.4163 | 0.0750 | 0.6110 | 0.0730 |
| 24.52 | 297.67 | 0.6938 | 0.0750 | 0.8246 | 0.0591 |
| 24.52 | 297.67 | 0.4626 | 0.0750 | 0.6534 | 0.0702 |
| 25.06 | 298.21 | 0.5088 | 0.0750 | 0.6925 | 0.0677 |
| 25.17 | 298.32 | 0.6475 | 0.0750 | 0.7948 | 0.0610 |
| 25.27 | 298.42 | 0.5926 | 0.0750 | 0.7568 | 0.0635 |
| 25.29 | 298.44 | 0.5782 | 0.0750 | 0.7464 | 0.0642 |
| 25.30a | 298.45 | 0.5550 | 0.0750 | 0.7290 | 0.0653 |
| 12.70 | 285.85 | 0.8102 | 0.1000 | 0.8860 | 0.0725 |
| 19.05 | 292.20 | 0.3149 | 0.1000 | 0.5008 | 0.1054 |
| 19.23 | 292.38 | 0.7649 | 0.1000 | 0.8610 | 0.0746 |
| 21.57 | 294.72 | 0.3599 | 0.1000 | 0.5497 | 0.1012 |
| 23.05 | 296.20 | 0.7199 | 0.1000 | 0.8348 | 0.0768 |
| 23.41 | 296.56 | 0.4050 | 0.1000 | 0.5949 | 0.0974 |
| 24.50 | 297.65 | 0.4499 | 0.1000 | 0.6366 | 0.0938 |
| 24.57 | 297.72 | 0.6750 | 0.1000 | 0.8069 | 0.0792 |
| 25.05 | 298.20 | 0.4949 | 0.1000 | 0.6755 | 0.0905 |
| 25.18 | 298.33 | 0.6300 | 0.1000 | 0.7772 | 0.0818 |
| 25.28 | 298.43 | 0.5851 | 0.1000 | 0.7457 | 0.0845 |
| 25.29 | 298.44 | 0.5627 | 0.1000 | 0.7291 | 0.0859 |
| 25.29a | 298.44 | 0.5399 | 0.1000 | 0.7117 | 0.0874 |
| 18.95 | 292.10 | 0.2801 | 0.2000 | 0.4427 | 0.2095 |
| 19.31 | 292.46 | 0.6800 | 0.2000 | 0.7876 | 0.1535 |
| 21.37 | 294.52 | 0.3201 | 0.2000 | 0.4881 | 0.2022 |
| 23.07 | 296.22 | 0.6401 | 0.2000 | 0.7617 | 0.1578 |
| 23.28 | 296.43 | 0.3600 | 0.2000 | 0.5304 | 0.1953 |
| 24.45 | 297.60 | 0.4000 | 0.2000 | 0.5699 | 0.1889 |
| 24.61 | 297.76 | 0.6000 | 0.2000 | 0.7342 | 0.1622 |
| 25.00 | 298.15 | 0.4400 | 0.2000 | 0.6070 | 0.1828 |
| 25.22 | 298.37 | 0.5600 | 0.2000 | 0.7052 | 0.1669 |
| 25.28 | 298.43 | 0.5201 | 0.2000 | 0.6745 | 0.1719 |
| 25.29a | 298.44 | 0.5002 | 0.2000 | 0.6585 | 0.1745 |
| 25.30a | 298.45 | 0.4800 | 0.2000 | 0.6417 | 0.1772 |
| 17.90 | 291.05 | 0.2100 | 0.4000 | 0.3280 | 0.4141 |
| 19.43 | 292.58 | 0.5097 | 0.4000 | 0.6269 | 0.3261 |
| 20.87 | 294.02 | 0.2400 | 0.4000 | 0.3650 | 0.4032 |
| 23.00 | 296.15 | 0.2699 | 0.4000 | 0.4000 | 0.3929 |
| 23.10 | 296.25 | 0.4801 | 0.4000 | 0.6032 | 0.3331 |
| 24.27 | 297.42 | 0.3001 | 0.4000 | 0.4336 | 0.3830 |
| 24.68 | 297.83 | 0.4500 | 0.4000 | 0.5779 | 0.3405 |
| 24.96 | 298.11 | 0.3301 | 0.4000 | 0.4653 | 0.3737 |
| 25.24 | 298.39 | 0.4201 | 0.4000 | 0.5518 | 0.3482 |
| 25.27 | 298.42 | 0.3600 | 0.4000 | 0.4954 | 0.3648 |
| 25.27 | 298.42 | 0.4048 | 0.4000 | 0.5379 | 0.3523 |
| 25.30 | 298.45 | 0.3900 | 0.4000 | 0.5242 | 0.3563 |
| 25.30a | 298.45 | 0.3751 | 0.4000 | 0.5100 | 0.3605 |
| 19.48 | 292.63 | 0.1199 | 0.7000 | 0.1816 | 0.7029 |
| 19.55 | 292.70 | 0.2551 | 0.7000 | 0.3456 | 0.6286 |
| 21.97 | 295.12 | 0.1351 | 0.7000 | 0.2020 | 0.6937 |
| 23.15 | 296.30 | 0.2400 | 0.7000 | 0.3290 | 0.6361 |
| 23.58 | 296.73 | 0.1500 | 0.7000 | 0.2214 | 0.6849 |
| 24.73 | 297.88 | 0.1650 | 0.7000 | 0.2405 | 0.6762 |
| 24.75 | 297.90 | 0.2250 | 0.7000 | 0.3122 | 0.6438 |
| 25.15 | 298.30 | 0.1799 | 0.7000 | 0.2590 | 0.6679 |
| 25.26 | 298.41 | 0.2098 | 0.7000 | 0.2947 | 0.6517 |
| 25.30a | 298.45 | 0.1949 | 0.7000 | 0.2771 | 0.6597 |
(a) Critical opalescence.
(a) Critical opalescence.


