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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitromethane with 2-Methylheptane
Components:
(1) 2-Methylheptane; C8H18; [592-27-8]
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).; *Ferloni, P.; Riccardi, R., Int. Data Ser., Sel. Data Mixtures, Ser. A(2), 84-90 (1977).
Variables:
Temperature = 371 K to 385 K
Prepared By:
V. P. Sazonov
Experimental Data:
(Notes on the Nomenclature)
Mutual solubility of nitromethane and 2-methylheptane
t/°C
T/K
10
2
* Mass Fraction w
1
(compiler)
Mole Fraction x
1
Comment(s)
97.8
371.0
19.7
0.315
Hydrocarbon-rich phase
97.8
371.0
-
-
Nitromethane-rich phase
99.5
372.7
-
-
Hydrocarbon-rich phase
99.5
372.7
81.2
0.890
Nitromethane-rich phase
102.8
376.0
24.2
0.374
Hydrocarbon-rich phase
102.8
376.0
-
-
Nitromethane-rich phase
105.0
378.2
-
-
Hydrocarbon-rich phase
105.0
378.2
76.6
0.860
Nitromethane-rich phase
106.2
379.4
28.1
0.422
Hydrocarbon-rich phase
106.2
379.4
-
-
Nitromethane-rich phase
106.6
379.8
-
-
Hydrocarbon-rich phase
106.6
379.8
75.3
0.851
Nitromethane-rich phase
109.6
382.8
35.0
0.502
Hydrocarbon-rich phase
109.6
382.8
-
-
Nitromethane-rich phase
110.6
383.8
-
-
Hydrocarbon-rich phase
110.6
383.8
65.6
0.781
Nitromethane-rich phase
110.9
384.1
41.6
0.571
Hydrocarbon-rich phase
110.9
384.1
-
-
Nitromethane-rich phase
111.3
384.5
47.4
0.628
Hydrocarbon-rich phase
111.3
384.5
-
-
Nitromethane-rich phase
111.4
384.6
50.4
0.655
Hydrocarbon-rich phase
111.4
384.6
57.6
0.718
Nitromethane-rich phase
111.6
384.8
52.0
0.670
Hydrocarbon-rich phase
111.6
384.8
52.0 (UCST)
0.670
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).