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.