IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitromethane with 2-Methylbutane

Components:
   (1) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail
   (2) 2-Methylbutane; C5H12; [78-78-4]  NIST Chemistry WebBook for detail

Original Measurements:
   Burova, T.V.; Kogan, V.B.; Nemtsev, M.S., Zh. Prikl. Khim. (Leningrad) 36, 988-94 (1963).

Variables:
   Temperature = 290 K to 341 K

Prepared By:
   V. P. Sazonov

Experimental Remarks:

   The mutual solubility of nitromethane and 2-methylbutane in mass per cent over the specified temperature range were presented in graphical form in the original publication. The numeric data in the table below were provided by the authors at the request of the compiler.

Experimental Data:   (Notes on the Nomenclature)

Mutual solubility of nitromethane and 2-methylbutane
t/°C	T/K	10² * Mass Fraction w₁	Mole Fraction x₁ (compiler)	Comment(s)
17.2	290.4	3.0	0.035	Hydrogen-rich phase
17.2	290.4	-	-	Nitromethane-rich phase
20.8	294.0	-	-	Hydrogen-rich phase
20.8	294.0	96.8	0.973	Nitromethane-rich phase
36.6	309.8	-	-	Hydrogen-rich phase
36.6	309.8	95.4	0.961	Nitromethane-rich phase
49.0	322.2	7.2	0.084	Hydrogen-rich phase
49.0	322.2	-	-	Nitromethane-rich phase
52.5	325.7	-	-	Hydrogen-rich phase
52.5	325.7	91.6	0.928	Nitromethane-rich phase
60.6	333.8	-	-	Hydrogen-rich phase
60.6	333.8	90.0	0.914	Nitromethane-rich phase
62.2	335.4	10.0	0.116	Hydrogen-rich phase
62.2	335.4	-	-	Nitromethane-rich phase
68.0	341.2	12.6	0.146	Hydrogen-rich phase
68.0	341.2	-	-	Nitromethane-rich phase

Method/Apparatus/Procedure:
   The synthetic method was used. A sample of (1) was poured into a 10 mL ampoule which was then cooled and a given amount of hydrocarbon added to it. The sealed ampoules were placed into a glass-walled thermostat. The temperature of the thermostat was increased gradually with periodic stirring and a preliminary determination of the clear-point temperature in every ampoule was made. A more precise value of the cloud-point temperature was determined by allowing the thermostat to cool. The determination was repeated several times.

Source and Purity of Materials:
   (1) Distilled through a column of 20 theoretical plates as in Ref. 1; b. p. = 101.5 °C at 101.33 kPa, n(20 °C, D) = 1.3820, d(20 °C) = 1138.0 g·L^-1.
   (2) Distilled through a column of 90 theoretical plates; b. p. = 27.88 °C at 101.33 kPa, n(20 °C, D) = 1.3538.

Estimated Errors:
   Solubility: Not reported.
   Temperature: Not reported.
   Pressure: Not reported.

References:
   ¹ S. K. Ogorodnikov, V. B. Kogan and M. S. Nemtsev, Zh. Prikl. Khim. (Leningrad) 34, 841 (1961).