IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Nitroethane with 1-Dodecanol

   (1) 1-Dodecanol; C12H26O; [112-53-8]  NIST Chemistry WebBook for detail
   (2) Nitroethane; C2H5NO2; [79-24-3]  NIST Chemistry WebBook for detail

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

Critical Evaluation:

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

        The original data are compiled immediately following this Critical Evaluation. All reported data are used in Table 2 and Table 3 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 in reasonable (± 5 % relative) agreement. All other data are regarded as tentative only.

        The upper critical solution temperature has been reported as 299.7 K (Francis2) and 301.6 K ;3 the difference is equal 1.9 K. In the opinion of the evaluator the value 301.6 K (Zhuravlev and Erofeeva3) should be treated as tentative because this value is in the agreement with other UCST of the nitroethane - alcohol systems published in this collection. Therefore the UCST reported in Francis2 is rejected, the same as UCST for other systems of the series reported in this paper. Thus the tentative values of the critical point are those reported in Zhuravlev and Erofeeva3: Tc = 301.6 K and xcl = 0.733. They were used in the approximation of solubility data.
       The recommended and tentative values for the mutual solubility reported in the above table were approximated by an equation based on the scaling law (described in the preface to this volume) for which the following parameters were derived:

        a1 = 0.73971, a2 = 0.36364, b1 = 8.92922, b2 = -7.36271 (mean standard error of estimate was 0.0044).

        For this approximation, the values of UCST and xcl were used from Zhuravlev and Erofeeva.3 This relationship is presented in Fig. 11 together with experimental data reported in the three references.1-3

Experimental Data:   (Notes on the Nomenclature)

Table 1. Summary of solubility data for the system nitroethane + 1-dodecanol
Hoerr et al.268 to 3021mutualsynthetic
Francis287 to 3002mutualsynthetic
Zhuravlev and Erofeeva294 to 3023mutualsynthetic
Table 2. Recommended and tentative values for the mutual solubilities of nitroethane (1) and 1-dodecanol (2)
T/K102 * Mass Fraction w1w1 NoteMole Fraction x1x1 NoteComment(s)
293.223.0tentative0.426tentativealcohol-rich phase
295.225.3recommended0.457recommendedalcohol-rich phase
297.229.0recommended0.503recommendedalcohol-rich phase
299.231.5tentative0.533tentativealcohol-rich phase
301.242.5tentative0.647tentativealcohol-rich phase
Table3. Recommended and Tentative values for the mutual solubilities of nitroethane (1) and 1-dodecanol (2)
T/K102 * Mass Fraction w2w2 NoteMole Fraction x2x2 NoteComment(s)
293.216.4recommended0.074recommendednitroethane-rich phase
295.219.8recommended0.090recommendednitroethane-rich phase
297.224.0recommended0.113recommendednitroethane-rich phase
299.228.0tentative0.135tentativenitroethane-rich phase
301.239.5tentative0.208tentativenitroethane-rich phase
View Figure 1 for this Evaluation

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

   1  Hoerr, C.W.; Harwood, H.J.; Ralston, A.W., J. Org. Chem. 9, 267-80 (1944).
   2  Francis, A.W., J. Phys. Chem. 60, 20-7 (1956).
   3  Zhuravlev, E.F.; Erofeeva, L.F., Uch. Zap., Perm. Gos. Univ. 178, 10-7 (1968).