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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitromethane with 2,2-Dimethylheptane
Components:
(1) 2,2-Dimethylheptane; C9H20; [1071-26-7]
NIST Chemistry WebBook
for detail
(2) Nitromethane; CH3NO2; [75-52-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Franzosini, P.; Riccardi, R.; Rolla, M., Ric. Sci. 38, 123-6 (1968).
Variables:
Temperature = 377 K to 387 K
Prepared By:
V. P. Sazonov
Experimental Remarks:
The mutual solubility of nitromethane and 2,2-dimethylheptane in mole fraction were reported over the specified temperature range in a graphical form in the original publication. The numercial data in the following table were provided by Professor R. Riccardi at the request of the compiler.
Experimental Data:
(Notes on the Nomenclature)
Mutual solubility of nitromethane and 2,2-dimethylheptane
t/°C
T/K
10
2
* Mass Fraction w
1
(compiler)
Mole Fraction x
1
Comment(s)
104.2
377.4
-
-
Hydrocarbon-rich phase
104.2
377.4
78.6
0.885
Nitromethane-rich phase
104.6
377.8
-
-
Hydrocarbon-rich phase
104.6
377.8
78.1
0.882
Nitromethane-rich phase
107.7
380.9
27.7
0.446
Hydrocarbon-rich phase
107.7
380.9
-
-
Nitromethane-rich phase
110.6
383.8
34.0
0.520
Hydrocarbon-rich phase
110.6
383.8
-
-
Nitromethane-rich phase
111.1
384.3
-
-
Hydrocarbon-rich phase
111.1
384.3
69.6
0.828
Nitromethane-rich phase
112.0
385.3
-
-
Hydrocarbon-rich phase
112.0
385.3
67.6
0.814
Nitromethane-rich phase
112.7
385.9
42.2
0.605
Hydrocarbon-rich phase
112.7
385.9
-
-
Nitromethane-rich phase
112.9
386.1
-
-
Hydrocarbon-rich phase
112.9
386.1
59.8
0.758
Nitromethane-rich phase
112.9
386.1
-
-
Hydrocarbon-rich phase
112.9
386.1
52.5
0.699
Nitromethane-rich phase
113.0
386.2
45.2
0.634
Hydrocarbon-rich phase
113.0
386.2
-
-
Nitromethane-rich phase
113.2
386.4
-
-
Hydrocarbon-rich phase
113.2
386.4
58.6
0.748
Nitromethane-rich phase
113.3
386.5
-
-
Hydrocarbon-rich phase
113.3
386.5
56.4
0.731
Nitromethane-rich phase
113.4
386.6
48.6
0.665
Hydrocarbon-rich phase
113.4
386.6
-
-
Nitromethane-rich phase
113.5
386.7
51.0
0.690
Hydrocarbon-rich phase
113.5
386.7
51.0 (UCST)
0.690
Nitromethane-rich phase
Method/Apparatus/Procedure:
The synthetic method
1
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:
(1) Fluka AG; purity 99 mole %; fractionally distilled, degassed and finally distilled through a P
2
O
5
filled tube.
(2) Fluka AG; purity 99 mole %; purification as above.
Estimated Errors:
Temperature: reproduced better than 0.1 K.
References:
1
P. Franzosini, Z. Naturforsch. 18A, 224 (1963).