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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitroethane with 3-Methylpentane
Components:
(1) 3-Methylpentane; C6H14; [96-14-0]
NIST Chemistry WebBook
for detail
(2) Nitroethane; C2H5NO2; [79-24-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Khosla, M.P.; Widom, B., J. Colloid Interface Sci. 76, 75-92 (1980).
Variables:
Temperature = 288 K to 299 K
Prepared By:
N. I. Lisov and V. P. Sazonov
Experimental Remarks:
UCST is 26.450 °C at x
1
= 0.500 (100 w
1
= 46.6, compilers).
Experimental Data:
(Notes on the Nomenclature)
Densities and surface tensions of the equilibrium liquid phases system nitroethane (1) + 3-methylpentane (2)
t/°C
T/K
Density ρ
Comment(s)
15.089
288.239
708.1
hydrocarbon-rich phase
20.005
293.155
716.3
hydrocarbon-rich phase
22.006
295.156
723.7
hydrocarbon-rich phase
25.004
298.154
-
hydrocarbon-rich phase
26.005
299.155
753.4
hydrocarbon-rich phase
26.203
299.353
-
hydrocarbon-rich phase
Densities and surface tensions of the equilibrium liquid phases system nitroethane (1) + 3-methylpentane (2)
t/°C
T/K
Density ρ
Comment(s)
15.089
288.239
930.8
nitroethane-rich phase
20.005
293.155
903.3
nitroethane-rich phase
22.006
295.156
887.4
nitroethane-rich phase
25.004
298.154
-
nitroethane-rich phase
26.005
299.155
836.4
nitroethane-rich phase
26.203
299.353
-
nitroethane-rich phase
Method/Apparatus/Procedure:
The synthetic method was used. Mixtures of near-critical composition were made in glass tubes, closed at one end and joined to vacuum-tight Teflon-glass valves. Phase-separation temperatures were determined visually. The critical composition sample was the one most opalescent at its phase-separation temperature. Two different pycnometers, volumes 25 mL & 50 mL, of the type glass-bulb-to-capillary, were used to determine densities of mixtures. Surface tension was measured by the differential-capillary-rise method using a sample cell adapted from Calado et al.
1
Source and Purity of Materials:
(1) Aldrich Chemical Inc.; purity 96.0 mass %; dried and double distilled under a reduced pressure in a 36 in. glass column; purity 99.96-99.98 mass %.
(2) Aldrich Chemical Inc.; research grade; purity 96.0 mass %; distilled at atmospheric pressure in the 36 in. glass column; purity 99.99 mass % by GLC.
Estimated Errors:
Temperature: Not specified.
References:
1
J. C. G. Calado, I. A. McLure, and V. A. M. Soares, Fluid Phase Equilib. 2, 199 (1978).