Components:
(1) Nitromethane,
CH3NO2 ; [75-52-5]
NIST WebBook
(2) 2-Methylheptane,
C8H18; [592-27-8]
NIST WebBook
Original Measurements
Franzosini, P.; Riccardi, R.; Rolla, M.; Ric. Sci. 38, 123-6 (1968).
Ferloni, P.; Riccardi, R.; Int. Data Series: Sel. Data Mixtures, Ser. A(2), 84-90 (1977).
Variables:
Ambient temperature: 371 - 385 K
Prepared by:
Method/Apparatus/Procedure:
The synthetic method1 was used. Tubes were filled under vacuum with known masses of degassed and moisture-free components, sealed, and then placed in a thermostat bath filled with paraffin oil. The mixtures in the tubes were shaken by a Chemap vibromixer type E-1. Temperatures were measured with Degussa Pt resistance thermometers, which were checked against standards. Phase changes (cloud points) were observed as mixtures were cooled.
Source and Purity of Materials:
- Fluka AG; purity 99 mole%; fractionally distilled, degassed and finally distilled through a P2O5 filled tube.
- Fluka AG; purity 99 mole%; purification as above.
Estimated Errors:
Ambient temperature: reproduced better than 0.1 K.
References
Experimental Values:
Mutual solubility of nitromethane and 2-methylheptane
| T (°C) | T (K) | x1 | 100w1a |
|---|---|---|---|
| 97.8 | 371.0 | 3.15 x 10-1 | 19.7 |
| 97.8 | 371.0 | - | - |
| 99.5 | 372.7 | - | - |
| 99.5 | 372.7 | 8.90 x 10-1 | 81.2 |
| 102.8 | 376.0 | 3.74 x 10-1 | 24.2 |
| 102.8 | 376.0 | - | - |
| 105.0 | 378.2 | - | - |
| 105.0 | 378.2 | 8.60 x 10-1 | 76.6 |
| 106.2 | 379.4 | 4.22 x 10-1 | 28.1 |
| 106.2 | 379.4 | - | - |
| 106.6 | 379.8 | - | - |
| 106.6 | 379.8 | 8.51 x 10-1 | 75.3 |
| 109.6 | 382.8 | 5.02 x 10-1 | 35.0 |
| 109.6 | 382.8 | - | - |
| 110.6 | 383.8 | - | - |
| 110.6 | 383.8 | 7.81 x 10-1 | 65.6 |
| 110.9 | 384.1 | 5.71 x 10-1 | 41.6 |
| 110.9 | 384.1 | - | - |
| 111.3 | 384.5 | 6.28 x 10-1 | 47.4 |
| 111.3 | 384.5 | - | - |
| 111.4 | 384.6 | 6.55 x 10-1 | 50.4 |
| 111.4 | 384.6 | 7.18 x 10-1 | 57.6 |
| 111.6 | 384.8 | 6.70 x 10-1 | 52.0 |
| 111.6 | 384.8 | 6.70 x 10-1 | 52.0 |
