IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitromethane with 2-Methoxy-2-methylpropane Water

Components:
   (1) Nitromethane; CH3NO2 ; [75-52-5]  NIST Chemistry WebBook for detail
   (2) 2-Methoxy-2-methylpropane; C5H12O; [1634-04-4]  NIST Chemistry WebBook for detail
   (3) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Kubicek, V.; Novak, J. P. and Matous, J.; Collect. Czech. Chem. Commun. 58, 983-95 (1993).

Variables:
   Temperature = 293 K

Prepared By:
   N. V. Sazonov

Experimental Data:   (Notes on the Nomenclature)

Table 1.Mutual solubility of nitromethane, 2-methoxy-2-methylpropane and water
t/°C	T/K	Mass Fraction w₁ (compiler)	Mass Fraction w₂ (compiler)	Mole Fraction x₁	Mole Fraction x₂
20	293	0.281	0.685	0.323	0.545
20	293	0.488	0.477	0.521	0.353
20	293	0.680	0.287	0.688	0.201
20	293	0.016	0.051	0.005	0.011

Table 2. Compositions of equilibrium liquid phases ternary system
t/°C	T/K	Mass Fraction w₁ (compiler)	Mass Fraction w₂ (compiler)	Mole Fraction x₁	Mole Fraction x₂	Comment(s)
20	293	0.100	0.878	0.128	0.776	nitromethane-rich phase
20	293	0.186	0.786	0.225	0.660	nitromethane-rich phase
20	293	0.278	0.689	0.321	0.551	nitromethane-rich phase
20	293	0.555	0.410	0.579	0.296	nitromethane-rich phase
20	293	0.774	0.197	0.768	0.135	nitromethane-rich phase
20	293	0.032	0.046	0.010	0.010	water-rich phase
20	293	0.047	0.041	0.015	0.009	water-rich phase
20	293	0.060	0.041	0.019	0.009	water-rich phase
20	293	0.084	0.027	0.027	0.006	water-rich phase
20	293	0.096	0.018	0.031	0.004	water-rich phase

Method/Apparatus/Procedure:
   Two methods were used. The solubility curve was determined by the titration method. The compositions of equilibrium liquid phases were determined by the analytical method with the apparatus described in Kubicek et al.¹

   Composition: ± 0001 mole fraction. Source and Purity of Materials:
   (1) Xenon (Poland); dried with sodium and distilled on a packed column with 40 theoretical plates; n(20 °C, D) = 1.3820, ρ(20 °C) = 1138.2 g · L^-1.
   (2) obtained from the Synthetic Rubber Research Institute (Czech); dried with sodium and distilled on a packed column; 0.005 mass % of water by the Karl Fischer analysis; n(20 °C, D) = 1.3688, ρ(20 °C) = 740.3 g·L^-1.
   (3) Twice distilled.

Estimated Errors:

References:
   ¹V. Kubicek, J. Matous, and J. P. Novak, Collect. Czech. Chem. Commun. 57, 2021 (1992).