IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: 2-Methyl-2-butene with Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 2-Methyl-2-butene; C5H10; [513-35-9]  NIST Chemistry WebBook for detail

Evaluator:
   G.T. Hefter, School of Mathematical and Physical Sciences, Murdoch University, Perth, Australia. November 1984.

Critical Evaluation:

   Quantitative solubility data for the 2-methyl-2-butene (1) and water (2) system have been reported in the publications listed in Table 1.

As only one study of the solubility of (1) in (2) has been reported (ref 2), no Critical Evaluation of those data can be made. The interested user is referred to the relevant data sheet for the experimental values. Solubilities of 2-methyl-2-butene in various aqueous salt solutions have also been reported (ref 3) but will not be considered in this Evaluation.

The reported values for the solubility for (2) in (1) are listed in Table 2 and plotted in Figure 1 . The agreement between the values at 293 K of Englin et al. (ref 1) and Pavlova et al. (ref 2) is reasonable and so the values in Table 2 may be considered “Tentative”, subject to further studies.

Experimental Data:   (Notes on the Nomenclature)

Table 1. Quantitative Solubility Studies of the 2-Methyl-2-butene (1) - Water (2) System
Author	T/K	Reference	Solubility	Method
Englin et al.	293	1	(2) in (1)	analytical
Pavlova et al.	293-333	2	mutual	GLC, Karl Fischer

Table 2. Tentative Values of the Solubility of Water (2) in -2-Methyl-2-butene (1)
T/K	Reference	Solubility	Best Solubility	Best Sol. Note	x₂ Power	x₂
293	1, 2	0.0435, 0.0388 g(2)/100g sln	0.041 ± 0.02 g(2)/100g sln	a	3	1.6
313	2	0.0589 g(2)/100g sln	0.059 g(2)/100g sln	-	3	2.3
333	2	0.0906 g(2)/100g sln	0.091 g(2)/100g sln	-	3	3.5

View Figure 1 for this Evaluation

Notes:
Table 2^a  This "Best" value obtained by averaging; σ_n has no statistical significance.

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

   1  Englin, B.A.; Plate, A.F.; Tugolukov, V.M. Pryanishnikova, M.A., Khim. Tekhnol. Topl. Masel 1965, 10, 42-6.
   2  Pavlova, S.P.; Pavlov, S.Yu.; Serafimov, L.A.; Kofman, L.S., Promyshlennost. Sinteticheskogo Kauchuka 1966, 3, 18-20.
   3  Natarajan, G.S.; Venkatachalam, K.A., J. Chem. Eng. Data 1972, 17, 328-9.