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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitromethane with Cyclooctane
Components:
(1) Nitromethane; CH3NO2; [75-52-5]
NIST Chemistry WebBook
for detail
(2) Cyclooctane; C8H16; [292-64-8]
NIST Chemistry WebBook
for detail
Original Measurements:
Riccardi, R.; Franzosini, P.; Rolla, M., Z. Naturforsch. 23A, 1816-8 (1968); *Spinolo, G., Int. Data Ser., Sel. Data Mixtures, Ser. A, (1) and (2), 25-29 (1981) and (1982).
Variables:
Temperature = 371 K to 383 K
Prepared By:
V. P. Sazonov
Experimental Data:
(Notes on the Nomenclature)
Mutual solubility of nitromethane and cyclooctane
t/°C
T/K
10
2
* Mass Fraction w
1
(compiler)
Mole Fraction x
1
Comment(s)
97.4
370.6
-
-
Hydrocarbon-rich phase
97.4
370.6
76.2
0.855
Nitromethane-rich phase
101.8
375.0
19.3
0.306
Hydrocarbon-rich phase
101.8
375.0
-
-
Nitromethane-rich phase
104.0
377.2
-
-
Hydrocarbon-rich phase
104.0
377.2
70.4
0.814
Nitromethane-rich phase
106.5
379.7
-
-
Hydrocarbon-rich phase
106.5
379.7
64.9
0.773
Nitromethane-rich phase
107.9
381.1
-
-
Hydrocarbon-rich phase
107.9
381.1
61.3
0.744
Nitromethane-rich phase
108.2
381.4
32.7
0.472
Hydrocarbon-rich phase
108.2
381.4
-
-
Nitromethane-rich phase
108.6
381.8
34.0
0.486
Hydrocarbon-rich phase
108.6
381.8
-
-
Nitromethane-rich phase
109.2
382.4
39.4
0.544
Hydrocarbon-rich phase
109.2
382.4
-
-
Nitromethane-rich phase
109.2
382.4
42.6
0.577
Hydrocarbon-rich phase
109.2
382.4
-
-
Nitromethane-rich phase
109.3
382.5
-
-
Hydrocarbon-rich phase
109.3
382.5
50.7
0.654
Nitromethane-rich phase
109.5
382.7
47.0
0.620
Hydrocarbon-rich phase
109.5
382.7
47.0 (UCST)
0.620
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).