Quantitative solubility data for the system 2,4-dimethylpentane (1) and water (2) are reported in the publications listed in Table 1.

The original data in all of these publications are compiled in the Data Sheets immediately following this Critical Evaluation. For convenience, further discussion of this system will be in two parts.


1. THE SOLUBILITY OF 2,4-DIMTHYLPENTANE (1) IN WATER (2)
Solubility data for 2,4-dimethylpentane in water (ref 2, 4) are listed in Table 2 with the following exceptions. The datum of Krzyzanowska and Szeliga (ref 5) has been excluded because it does not appear to be independent of that of Price (ref 4). The earlier datum of McAuliffe (ref 1) is presumably superceded by his later determination (ref 2) and has also been excluded.

The 298K datum of Polak and Lu (ref 3) is considerably higher (ca. 25% relative) than other reported values (ref 2, 4). Furthermore, the increase in solubility between 298 and 273 K, as for other hydrocarbons investigated by these authors, is unusually large. The data of Polak and Lu (ref 3) are therefore rejected.


2. THE SOLUBILITY OF WATER (2) IN 2,4-DIMETHYLPENTANE (1)
The solubility of water in 2,4-dimthylpentane has been reported only by Polak and Lu (ref 3) and thus no critical evaluation can be made. The interested user is referred to the relevant Data Sheet for solubility values. However, it can be noted that the data of Polak and Lu are generally close to 'Recommended' values in well characterized systems.