IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: 2-Nitropropane with Water

   (1) 2-Nitropropane; C3H7NO2 ; [79-46-9]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

   V P. Sazonov, Technical University, Samara, Russia, May, 2000.

Critical Evaluation:

           Quantitative solubility data for the system 2-nitropropane (1) + water (2) were reported in the publications listed in Table 1.

        The original data are given in the data sheets immediately following this Critical Evaluation. All reported data are used in the table below.
        Values obtained by the evaluator by graphical interpolation or extrapolation from the data sheets are presented in the Table 2 and Table 3. Data are"recommended" if two or more apparently reliable studies are is reasonable (± 5 % relative) agreement. All other data are regarded as tentative only.

        The solubility of 2-nitropropane in water (x1) and solubility of water in 2-nitropropane (x2 ) reported in the above table have been approximated by an equations:

               x1 = 3·10-13·(T/K)6 - 5·10-10·(T/K)5 + 4·10-7·(T/K)4- 2·10-4·(T/K)3+ 0.0452·(T/K)2 - 5.8977·(T/K) + 319.61,
               x2 = -4·10-9·(T/K)4 + 5·10-6·(T/K)3 - 0.0021·(T/K)2 + 0.4279·(T/K) - 32.508, (mean standard error of estimate was 0.0112).
        This relationship is presented in Fig. 13 together with experimental data as reported in three studies.1-3

Experimental Data:   (Notes on the Nomenclature)

Table 1. Summary of solubility data for the system 2-nitropropane + water
Pol'shinskii and Kozlov3111 (1) in (2)synthetic
Hampe2932mutualnot stated
Stephenson273 to 3643mutualnot stated
Table 2. Recommended and Tentative values for the mutual solubilities of 2-nitropropane (1) and water (2)
T/K102 * Mass Fraction w1w2 NoteMole Fraction x1x1 NoteComment(s)
273.23.0tentative0.0062tentativewater-rich phase
293.21.75recommended0.0036recommendedwater-rich phase
303.21.7tentative0.0035tentativewater-rich phase
313.21.75tentative0.0036recommendwater-rich phase
323.21.8tentative0.0037tentative water-rich phase
333.22.0tentative0.0041tentativewater-rich phase
343.22.0tentative0.0041tentativewater-rich phase
353.22.2tentative0.0045tentativewater-rich phase
363.22.4tentative0.0049tentative water-rich phase
Table 3. Recommended and Tentative values for the mutual solubilities of 2-nitropropane (1) and water (2)
T/K102 * Mass Fraction w2Mole Fraction x2x2 NoteComment(s) phase phase
303.20.60.029tentative2-nitropropane-rich phase
313.20.70.034tentative2-nitropropane-rich phase
323.21.00.048tentative 2-nitropropane-rich phase
333.21.20.057tentative2-nitropropane-rich phase
343.21.40.066tentative2-nitropropane-rich phase
353.21.90.087tentative2-nitropropane-rich phase
363.22.30.104tentative 2-nitropropane-rich phase
View Figure 1 for this Evaluation

References: (Click a link to see its experimental data associated with the reference)

   1  Pol’shinskii, V.V.; Kozlov, L.M., Khim. Tekhnol. Topl. Masel (10), 9-13 (1970).
   2  Hampe, M.J., Chem. Ing. Tech. 57, 669-81 (1985).
   3  Stephenson, R.M., J. Chem. Eng. Data 37, 80-95 (1992).